WO2007066885A1 - Systeme d'antenne destine a poursuivre un satellite mobile et support associe - Google Patents
Systeme d'antenne destine a poursuivre un satellite mobile et support associe Download PDFInfo
- Publication number
- WO2007066885A1 WO2007066885A1 PCT/KR2006/004101 KR2006004101W WO2007066885A1 WO 2007066885 A1 WO2007066885 A1 WO 2007066885A1 KR 2006004101 W KR2006004101 W KR 2006004101W WO 2007066885 A1 WO2007066885 A1 WO 2007066885A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- elevation angle
- antenna
- rotating plate
- antenna system
- substrate
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
Definitions
- the present invention relates to a antenna system for tracking a mobile satellite and a movable carrier having the same; and more particularly, to a antenna system for tracking a mobile satellite and a movable carrier having the same for mechanically adjusting the orientation of an antenna at the azimuth angle and the elevation angle and correcting the phase error of a receiving signal while adjusting the elevation angle of the antenna at the same time.
- a conventional mobile satellite antenna system requires a proper satellite tracking unit for adjusting the orientation of an antenna in a satellite direction for receiving signals from a satellite with the conventional mobile satellite antenna system mounted at a movable carrier.
- the conventional mobile satellite antenna system generally has an electrical adjusting structure that includes a plurality of antennas, an active channel connected to the plurality of the antennas and including a phase shifter for forming a transmitting and receiving beam, and an additional active channel having an additional phase shifter for forming and adjusting a satellite tracking beam.
- the electrical adjusting structure of the mobile satellite antenna system requires a high manufacturing cost and an expensive maintenance cost due to expensive parts such as a phase shifter. Since the electrical adjusting structure of the mobile satellite antenna system is complicated, there are many difficulties arisen to manufacture the mobile satellite antenna system. Furthermore, it takes such a long time to manufacture the mobile satellite antenna system.
- an object of the present invention to provide a antenna system for tracking a mobile satellite and a movable carrier having the same for mechanically adjusting the orientation of an antenna independently at the azimuth angle and the elevation angle, simultaneously correcting the phase error of a receiving signal while adjusting the elevation angle of the antenna, requiring a less cost for manufacturing, fixing and maintaining the antenna system compared to an electrical-adjusting type satellite tracking system, and having the optimal function and structure for mechanically adjusting the antenna.
- a antenna system for tracking a mobile satellite including: a substrate; a rotating plate rotatably disposed on the substrate; one or more antennas disposed at the rotating plate; an azimuth angle adjusting unit for mechanically adjusting an azimuth angle of the antenna; and an elevation angle adjusting unit for mechanically adjusting an elevation angle of the antenna.
- a antenna system for tracking a mobile satellite according to the present invention includes an azimuth angle adjusting unit and an elevation angle adjusting unit for adjusting the azimuth angle and the elevation angle of antennas mechanically and independently. Also, the antenna system for tracking a mobile satellite according to the present invention adjusts the distance between the antennas while adjusting the elevation angle of the antenna through an elevation angle driving links. Furthermore, the antenna system for tracking a mobile satellite according to the present invention compensates the phase error of the receiving signal, which is generated when the elevation angle is adjusted, through the elevation angle driving links. Moreover, the antenna system for tracking a mobile satellite requires a less manufacturing cost compared to an electrical driving type antenna system for tracking a mobile satellite having a plurality of phase shifters through minimizing electric active parts.
- the antenna system for tracking a mobile satellite according to the present invention has a simpler mechanical structure without phase shifters which are required for electrical tracking scheme, the reliability of the antenna system for tracking a mobile satellite is improved. Accordingly, the maintenance cost thereof is reduced.
- FIG. 1 is a perspective view of a antenna system for tracking a mobile satellite in accordance with an embodiment of the present invention
- FIG. 2 is a side view of Fig. 1 ;
- FIG. 3 is a perspective view of the mobile satellite tracing antenna system shown in
- Fig. 1 which is adjusted at an azimuth angle and an elevation angle
- FIG. 4 is a side view of Fig. 3;
- FIG. 5 is a view showing the connection of an elevation angle driving links in
- FIG. 6 is a view showing a driving mechanism of an elevation angle driving links in accordance with an embodiment of the present invention.
- Fig. 7 shows the elevation angle driving unit of Fig. 5 at the elevation angle
- Fig. 8 shows the view of Fig. 6 controlled at the elevation angle.
- FIG. 1 is a perspective view of a mobile satellite antenna system in accordance with an embodiment of the present invention
- Fig. 2 is a side view of Fig. 1
- Fig. 3 is a perspective view of the mobile satellite tracing antenna system shown in Fig. 1, which is adjusted at an azimuth angle and an elevation angle
- Fig. 4 is a side view of Fig. 3.
- the mechanical-adjusting type mobile satellite antenna system includes a substrate 400, a rotating plate 200, antennas 100, an azimuth angle adjusting unit, and an elevation angle adjusting unit.
- the substrate 400 is a main body that houses the rotating plate 200, the antenna
- the substrate 400 includes a substrate supporting plate 410 coupled to the bottom of the substrate 400 for horizontality sustaining and preventing the substrate 400 from being vibrated, and a rotating plate supporting unit 430 rotatably coupled to the supporting plate 400 to allow the rotating plate 200 to rotate and including a rotating supporting unit such as a shaft-bearing at the top surface thereof in order to allow smooth rotation of the rotating plate 200.
- the rotating plate 200 has a disk shape and houses the antennas 100 and the
- the rotating plate 200 includes a groove around the circumference of the rotating plate 200 for disposing an azimuth angle adjusting belt 310 therein. Furthermore the rotating plate 200 may include a rotating plate frame unit 210 rotatably coupled at the bottom thereof for supporting the entire rotating plate 200.
- the antenna 100 is a plate shaped member including a plurality of radiation
- Two of antennas as a set are disposed on the rotating plate 200 for transmitting and receiving communication signals including broadcasting signal and satellite signals.
- the azimuth angle adjusting unit is disposed on the substrate 400 and includes a motor such as a stepping motor for fine adjustment, a driving shaft and a poly.
- the azimuth angle adjusting unit includes an azimuth angle driving motor 300 and an azimuth angle driving belt 310.
- the azimuth angle driving motor 300 generates the power to rotate the rotating plate 200 in response to a driving signal for adjusting an azimuth angle of the antennas regarding to satellite positioning information obtained through analyzing the intensity of a receiving signal using a sensor, such as a gyroscope sensor, and a control unit (not shown).
- the azimuth angle driving belt 310 transfers the generated power to the rotating plate 200.
- the azimuth angle driving belt 310 may directly connected to the rotating plate 200.
- the azimuth angle adjusting unit may further include a poly 300, a sub substrate 420 and a control unit 340.
- the poly 300 includes one end connected to the rotating plate 200 through the azimuth angle driving belt 310.
- the one end of the poly 300 has a smaller diameter than the other end for increasing the torque of the rotating power generated from the azimuth angle driving motor 300 and for decelerating.
- the poly 300 also includes the other end connected to the azimuth angle driving motor 300 through the azimuth angle driving belt 320 for transferring the rotating power.
- the sub substrate 420 stably supports the both ends of the poly 330.
- the control unit 340 controls the tension of the azimuth angle driving belt 320.
- the azimuth angle adjusting unit finely controls the group of the antennas 100 in a range of 360 with the vertical central shaft of the rotating plate 200 as a center in order to control the antenna system according to the motion of a mobile carrier.
- the elevation angle adjusting unit includes a motor
- the elevation angle adjusting unit includes an elevation angle driving motor 550, a pair of elevation angle driving links 500, and an elevation angle driving belt 520.
- the elevation angle driving motor 550 generates the driving power of the antenna in response to a driving signal for adjusting the elevation angle regarding to satellite positioning information obtained through analyzing the intensity of a receiving signal using a sensor, such as a gyroscope sensor, and a control unit.
- the pair of elevation angle driving links 500 is connected to the both ends of a plurality of antennas 100 to be connected to the plurality of antennas 100 at the same time for transferring the generated driving force to the antenna 100 to drive the antennas 100 at the elevation angle.
- the elevation angle driving belt 520 directly transfers the driving force to the elevation angle driving links 500.
- the elevation angle driving unit may further include a bottom shaft 512, and a top shaft 507.
- the bottom shaft 512 is disposed at the bottom of the rotating plate 200 and is supported by a bottom supporting member 513. Also, the bottom shaft 512 is connected to the elevation angle driving motor 550 through the elevation angle driving belt 520.
- the top shaft 507 is disposed at the top of the rotating plate 200 and supported by a top supporting member 506. The elevation angle adjusting unit finely adjusts the group of antennas 100 to direct in the elevation angle according to the motion of the mobile carrier.
- FIG. 5 is a view showing the connection of an elevation angle driving links in
- Fig. 6 is a view showing a driving mechanism of an elevation angle driving links in accordance with an embodiment of the present invention.
- Fig. 7 shows the elevation angle driving unit of Fig. 5 at the elevation angle
- Fig. 8 shows the view of Fig. 6 controlled at the elevation angle.
- the elevation angle driving links 500 includes a pair of antenna coupling plates 516, a pair of horizontal coupling rods 501 and 502, a vertical coupling rod 503 and a link supporting member 508.
- a central shaft 509 is formed to be externally projected from the center thereof, and a pair of side shafts 510 and 511 is disposed to be externally projected from the both of sides thereof.
- the pair of the horizontal coupling rods 501 and 502 has a plurality of holes 501 A corresponding to the side shafts 510 and 511, and is rotatably connected to the coupling plates 516 by inserting each of the side shafts 510 and 511 through the holes 510A.
- the top shaft 507 is connected to the center of the vertical coupling rod 503, and axially connects the horizontal coupling rod 501 disposed above the top shaft 507 and the horizontal coupling rod 502 below the top shaft 507.
- the link supporting member 508 is connected to the rotating plate 200 and includes a hole corresponding to the central shaft 509.
- the link supporting member 508 is supported by the central shaft 509 which is inserted into the hole of the supporting member 508.
- the plurality of antennas 100 may move in the same angle by the rotation of the top shaft 507.
- the elevation adjusting link 500 may further include a fixing member 503 fixed at the link supporting member 508 and having a gear 500 formed along the circumference thereof, a rotating member 535 having a gear 533 formed along the circumference thereof to be coupled to the fixing member 530 and having a cam-groove formed at an oval opened side, and a horizontal coupling bar 514 connecting the side shafts 510 and 511 horizontally through inserting a cam shaft 515 formed at the one end thereof into the cam-groove 504 and axially connecting the other end thereof to the side shaft 511.
- the antenna coupling plate 516 According to the elevation angle adjustment of the antenna coupling plate 516, the gap between the antennas 100 is also adjusted.
- FIGs. 6 and 8 show the elevation adjusting link unit 500 without the vertical
- Ll and L2 denote lengths of marked portions. They are mathematically identical, 'd' denotes a distance from the cam shaft 515 to the center of the rotating member 535 in Fig. 5, and 'd' denotes a distance from the cam shaft 515 to the center of the rotating member 535.
- the antenna system for tracking a mobile satellite according to the present embodiment can mechanically adjust the distance between the antennas 100 to be lengthened or be shortened when the elevation angle of the antenna 100 is adjusted through the shape of the oval cam groove 504. Therefore, the antenna system for tracking a mobile satellite according to the present embodiment can mechanically compensate the phase error of a receiving signal, which may be distorted when the elevation angle of the antenna is adjusted. Also, the antenna system for tracking a mobile satellite according to the present invention can adjust the azimuth angle and the elevation angle independently through the mechanical adjustment by including the azimuth angle adjusting unit and the elevation angle adjusting unit.
- the present invention is not limited thereby. More antennas may be included by arranging the antennas as shown in the present embodiment and horizontally coupling the antennas through the horizontal coupling rods 501 and 502.
- belts are used to transfer the driving power for controlling the azimuth angle and the elevation angle.
- the present invention is not limited thereby. That is, the mechanical adjusting-type antenna system for tracking a mobile satellite according to the present invention may transfer the driving power using various gears or links.
- the mechanical adjusting-type antenna system for tracking a mobile satellite may be used to stably transmit and receive communication signals with mounted at various mobile carriers such as automobiles, trains, ships and air-planes.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
L'invention concerne un système d'antenne destiné à poursuivre un satellite mobile et un support mobile associé servant à régler mécaniquement l'orientation d'une antenne aux angle d'azimut et d'élévation et à corriger l'erreur de phase d'un signal reçu tout en réglant l'angle d'élévation de l'antenne. Le système d'antenne destiné à poursuivre un satellite mobile comprend: un substrat; une plaque rotative montée rotative sur le substrat; une ou plusieurs antennes montées sur la plaque rotative; une unité de réglage d'angle d'azimut destinée à régler mécaniquement un angle d'azimut de l'antenne; et une unité de réglage d'angle d'élévation destinée à régler mécaniquement un angle d'élévation de l'antenne.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/096,394 US7893885B2 (en) | 2005-12-08 | 2006-10-12 | Antenna system for tracking mobile satellite and carrier having the same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2005-0119630 | 2005-12-08 | ||
KR20050119630 | 2005-12-08 | ||
KR1020060045213A KR100769988B1 (ko) | 2005-12-08 | 2006-05-19 | 기계적 제어방식의 이동형 위성추적 안테나시스템과 이를적용한 이동수단 |
KR10-2006-0045213 | 2006-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007066885A1 true WO2007066885A1 (fr) | 2007-06-14 |
Family
ID=38123002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2006/004101 WO2007066885A1 (fr) | 2005-12-08 | 2006-10-12 | Systeme d'antenne destine a poursuivre un satellite mobile et support associe |
Country Status (1)
Country | Link |
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WO (1) | WO2007066885A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015200860A1 (fr) * | 2014-06-27 | 2015-12-30 | Viasat, Inc. | Système et appareil d'entraînement d'antenne |
Citations (4)
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JPH07263939A (ja) * | 1994-03-24 | 1995-10-13 | Nippon Steel Corp | 移動体搭載用衛星アンテナ装置 |
US6204823B1 (en) * | 1999-03-09 | 2001-03-20 | Harris Corporation | Low profile antenna positioner for adjusting elevation and azimuth |
US6738024B2 (en) * | 2001-06-22 | 2004-05-18 | Ems Technologies Canada, Ltd. | Mechanism for differential dual-directional antenna array |
US6839039B2 (en) * | 2002-07-23 | 2005-01-04 | National Institute Of Information And Communications Technology Incorporated Administrative Agency | Antenna apparatus for transmitting and receiving radio waves to and from a satellite |
-
2006
- 2006-10-12 WO PCT/KR2006/004101 patent/WO2007066885A1/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07263939A (ja) * | 1994-03-24 | 1995-10-13 | Nippon Steel Corp | 移動体搭載用衛星アンテナ装置 |
US6204823B1 (en) * | 1999-03-09 | 2001-03-20 | Harris Corporation | Low profile antenna positioner for adjusting elevation and azimuth |
US6738024B2 (en) * | 2001-06-22 | 2004-05-18 | Ems Technologies Canada, Ltd. | Mechanism for differential dual-directional antenna array |
US6839039B2 (en) * | 2002-07-23 | 2005-01-04 | National Institute Of Information And Communications Technology Incorporated Administrative Agency | Antenna apparatus for transmitting and receiving radio waves to and from a satellite |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015200860A1 (fr) * | 2014-06-27 | 2015-12-30 | Viasat, Inc. | Système et appareil d'entraînement d'antenne |
US9680199B2 (en) | 2014-06-27 | 2017-06-13 | Viasat, Inc. | System and apparatus for driving antenna |
US10135127B2 (en) | 2014-06-27 | 2018-11-20 | Viasat, Inc. | System and apparatus for driving antenna |
US10559875B2 (en) | 2014-06-27 | 2020-02-11 | Viasat, Inc. | System and apparatus for driving antenna |
EP3657601A1 (fr) * | 2014-06-27 | 2020-05-27 | ViaSat Inc. | Procédé de couplage rotationnel d'antennes |
US10985449B2 (en) | 2014-06-27 | 2021-04-20 | Viasat, Inc. | System and apparatus for driving antenna |
US11165142B2 (en) | 2014-06-27 | 2021-11-02 | Viasat, Inc. | System and apparatus for driving antenna |
US11411305B2 (en) | 2014-06-27 | 2022-08-09 | Viasat, Inc. | System and apparatus for driving antenna |
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