EP0662254B1 - Antennenträger mit steuerbarer ausrichtung, insbesondere für antenne zur satelliten-kommunikation - Google Patents

Antennenträger mit steuerbarer ausrichtung, insbesondere für antenne zur satelliten-kommunikation Download PDF

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Publication number
EP0662254B1
EP0662254B1 EP93920932A EP93920932A EP0662254B1 EP 0662254 B1 EP0662254 B1 EP 0662254B1 EP 93920932 A EP93920932 A EP 93920932A EP 93920932 A EP93920932 A EP 93920932A EP 0662254 B1 EP0662254 B1 EP 0662254B1
Authority
EP
European Patent Office
Prior art keywords
dihedron
triangle
antenna
mount
adjusting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93920932A
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English (en)
French (fr)
Other versions
EP0662254A1 (de
Inventor
Clifford David Hughes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agence Spatiale Europeenne
Original Assignee
Agence Spatiale Europeenne
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Filing date
Publication date
Application filed by Agence Spatiale Europeenne filed Critical Agence Spatiale Europeenne
Publication of EP0662254A1 publication Critical patent/EP0662254A1/de
Application granted granted Critical
Publication of EP0662254B1 publication Critical patent/EP0662254B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/125—Means for positioning

Definitions

  • the invention relates to an antenna mount, in particular for a satellite telecommunications antenna.
  • Satellite antennas just like, more generally, antennas used in the microwave domain, require very precise pointing in a given direction, which can be fixed or mobile.
  • This direction is for example that in which a communication satellite is located, most often a satellite located in a quasi-geostationary or quasi-geosynchronous orbit (this case, nor even that of an antenna for telecommunications by satellite, not being in no way limiting the invention).
  • the antenna mount that is to say the mechanism which makes it possible to precisely support and point the antenna, can be of various types.
  • mount most commonly used for satellite earth stations is the type of mount called "site-azimuth", which is in the form of a basic rigid structure on which is mounted a movable structure in rotation around a vertical axis which, itself, supports a mobile rotating structure around a horizontal axis and integral with the antenna.
  • EP-A-0 227 930 discloses an antenna mount with adjustable pointing, in particular in FIG. 4. This consists of two dihedrons, at variable angles. However, these two dihedral do not have common plans.
  • One of the objects of the invention is to provide an adjustable antenna mount, in order to allow precise pointing and tracking, in particular of a satellite, which is advantageously foldable to allow easy transport and rapid disassembly / reassembly. , and which is for all that mechanically simple, robust and inexpensive to produce.
  • the frame of the invention is characterized in that it comprises: a first dihedral, one of the planes of which is carried by a support base; means for adjusting the angle of this first dihedral; a second dihedral, one of the planes of which is common to the first dihedron and the other plane of which carries the antenna, the axis of the first dihedral and the axis of the second dihedral being neither parallel nor confused; and means for adjusting the angle of this second dihedral.
  • such a frame may include: a first structure, defining a first triangle, integral with said support base; a second structure, defining a second triangle, the first and the second triangle having a common side provided with a first articulated connection, so as to constitute the first dihedron, the means for adjusting the angle of the first dihedron being interposed between the vertex of the first triangle opposite the articulation side and the vertex of the second triangle opposite to this same side; and a third structure, defining a third triangle, the second and the third triangle having a common side provided with a second articulated connection, so as to constitute the second dihedron, the means for adjusting the angle of the second dihedron being interposed between the top of the second triangle opposite to the articulation side and the top of the third triangle opposite to this same side.
  • the means for adjusting the first and second dihedral are separable from said structures, so as to allow the frame to be folded flat by closing the two dihedrons.
  • the means for adjusting the angles of the first and second dihedral are controlled by calculating means, capable of transforming setpoint values expressed in elevation and azimuth angles into signals for direct control of the position of these adjustment means.
  • Figure 1 is a schematic explanatory view of the structure of the frame of the invention.
  • Figure 2 shows how the mount of the invention can be used for an antenna wall mount.
  • FIG. 3 shows how the structure of the invention can be used for attachment to the antenna ground, in particular for the adaptation of a conventional “site-azimuth” antenna.
  • FIG. 4 illustrates an embodiment adaptable to a fixed pointing antenna so as to be able to allow slight variations in the pointing direction thereof and thus ensure permanent tracking of the satellite.
  • FIG. 5 schematically illustrates the device for calculating and controlling the position of the actuators.
  • Figure 6 is a perspective view showing how it is possible to mechanically produce the frame of the invention in foldable and removable form.
  • Figure 7 shows the detail of one of the connection elements of the frame of figure 6.
  • FIGS. 8 and 9 are side views of the element in FIG. 7.
  • FIG. 10 shows how the mount of the invention can be used as the main mount for a large antenna.
  • FIG. 1 The general structure of the frame of the invention is illustrated in Figure 1: it includes a first triangular structure 1 (triangle ABC) on which is articulated a second structure 2, also triangular (triangle BCD), which itself carries with articulation of a third triangular structure 3 (BDE triangle). Structures 1 and 2 are articulated at 4 along the BC side, and structures 2 and 3 are articulated at 5 along the BD side, i.e. along a different side on the articulation side structures 1 and 2.
  • triangular structure 1 triangle ABC
  • BCD triangular
  • BDE triangle triangular structure 3
  • Structures 1 and 2 are articulated at 4 along the BC side
  • structures 2 and 3 are articulated at 5 along the BD side, i.e. along a different side on the articulation side structures 1 and 2.
  • the triangles ABC, BCD and BDE are all equilateral, but this characteristic is in no way essential.
  • the structures 1 and 2 thus define a first dihedral ABC, BCD, of variable angle ⁇ and adjustable by an actuator 6, manual or motorized, for example a linear electric actuator interposed between the vertices A and D.
  • structures 2 and 3 define a second dihedron BCD, BDE of variable ⁇ angle and adjustable by a second linear actuator 7 interposed between the vertices E and C.
  • AD and EC thus constitute struts of variable length and length .
  • the first structure 1 is fixed and the third structure 3 carries support means for the antenna, for example a ring 8 in the shape of a circle inscribed in the triangle BDE and which will support the dish of the antenna (which may be of dimension greater or less than this support ring 8).
  • a ring 8 in the shape of a circle inscribed in the triangle BDE and which will support the dish of the antenna (which may be of dimension greater or less than this support ring 8).
  • each of the half-planes of each of the dihedrons is however not essential, the triangles ABC, BCD and BDE can simply be virtual triangles defined on structures whose physical contour is not necessarily that of a triangle.
  • this determination involves only simple calculations, easy to implement by a microprocessor incorporated in the frame control system or a microcomputer performing, among other things, this task, which will not be burdensome very moderately the overall cost of the frame with its control system.
  • the first structure 1 can be simply placed on the ground, as illustrated diagrammatically in FIG. 1.
  • FIG. 2 It can also, as illustrated in FIG. 2, be fixed to a wall 10, a configuration which is quite often found in antennae for satellites and which thus makes it possible to have a continuously adjustable mount supporting the antenna, here constituted of a simple dish 9.
  • the mount of the invention rests on the ground by the first structure 1, but the third structure 3 does not directly carry the antenna as in the case of FIGS. 1 and 2, but a mount d pre-existing antenna 11 of the site-azimuth type, consisting of a vertical shaft 12 carrying an assembly 13 movable around a vertical axis 14 on which the support 15 of the antenna is articulated around a horizontal axis 16.
  • a mount d pre-existing antenna 11 of the site-azimuth type consisting of a vertical shaft 12 carrying an assembly 13 movable around a vertical axis 14 on which the support 15 of the antenna is articulated around a horizontal axis 16.
  • Figure 4 illustrates a possible form of construction, mechanically very simple, suitable for this type of situation.
  • the pre-existing antenna is mounted on a barrel 12 provided with a support tripod 17.
  • the additional mount produced according to the teachings of the invention, consists of tubular profiles with square section, of steel or aluminum, which can be common profiles assembled by traditional methods (welded or mechanically welded assembly).
  • the joints used can be of an extremely simple type, for example of the same type as those used for door or window hinges.
  • the triangular construction of the frame of the invention takes up all the loads at intersections, which ensures excellent robustness and allows the use of relatively light materials for its production.
  • the joints essentially only undergo the gravity constraints and the additional stresses of the wind, providing pointing tolerances which compare quite favorably with those of conventional solutions.
  • the actuators 6 and 7 may consist of an electric actuator system with a body 18 and a movable rod 19 provided respectively with fasteners 20 and 21 which will be fixed to homologous fasteners 22 and 23 of the triangular structures.
  • the motor 24 of each of the two actuators is electrically connected to a control system, the two actuators being physically and electrically independent.
  • FIG. 5 schematically shows the control circuit, which comprises an electronic and electrical block 26 for calculating the coordinates and for controlling the respective motors 24 of the actuators 6 and 7; this box 26 receives its power supply by a line 27 and by lines 28, the conventional site instructions S and azimuth A (in digital or analog form), which are processed within the unit 26 by transformation of coordinates to determine the length of the struts controlled by cylinders 6 and 7 to obtain the desired angles of elevation and azimuth.
  • the control circuit which comprises an electronic and electrical block 26 for calculating the coordinates and for controlling the respective motors 24 of the actuators 6 and 7; this box 26 receives its power supply by a line 27 and by lines 28, the conventional site instructions S and azimuth A (in digital or analog form), which are processed within the unit 26 by transformation of coordinates to determine the length of the struts controlled by cylinders 6 and 7 to obtain the desired angles of elevation and azimuth.
  • Figure 6 shows a form of implementation particularly suitable for the production of a removable and portable frame.
  • the frame is produced essentially from profiles 29 of square section constituting the three sides of each of the three triangles (these profiles are therefore nine in number), profiles which are connected together by connecting pieces 30, five in number .
  • connecting pieces 30 which define the vertices of the triangles ABC, BCD and BDE, are not identical due to the particular geometry of each of the vertices. However, they are all made from the same essential elements, illustrated by way of example in FIGS. 7 to 9 for the connecting piece 30 located furthest back in the perspective view (and therefore corresponding to the apex B), which is the most complex: the connecting parts comprise at least one fixing plate 31 (two plates in the case of the part illustrated in FIGS. 7 to 9) provided with holes 32 allowing fixing to the ground or to an antenna support, as appropriate (lower plates or upper plates).
  • Segments 33 defining between them the various angles of the triangles, end at 34 in the form of male parts coming to fit inside the profiles constituting the sides of the triangles, the connection with the latter being effected for example by means of '' a screw or pin system.
  • the part 30 also carries, in the case of the four connecting parts other than that shown in FIGS. 7 to 9, a vertical support 35 allowing the fixing of the jacks in the holes 22 and 23 made in these parts 35.
  • the connection between the respective fasteners 22 and 23 is preferably made by easily removable means (nested or screwed mounting), in order to be able to disassemble the actuators quickly and fold the assembly flat, which is very interesting in the case of portable stations, when transportability and speed of implementation are essential characteristics.
  • the connecting pieces 30 also carry the hinges 36 making it possible to articulate between the three triangles of the frame; these hinges and their arrangement are particularly clearly visible in FIGS. 8 and 9.
  • FIG. 10 shows an embodiment adapted to a case, quite different from the previous one, where the mount of the invention serves as a primary, fixed mount for a large diameter antenna and purely and simply replaces the traditional mount site- azimuth.
  • the antenna support triangle 3 is connected to the antenna 37 at three equidistant points 38, integral with the annular element 39 of the antenna support frame located on the back of the reflector.
  • the lower triangle 1, for its part, is placed on a fixed base 40, for example a concrete base, or at the top of a building.
  • the actuators 6 and 7 perform the same functions as in the embodiments explained above, but with, in the present case very much greater opening angles ⁇ and ⁇ , insofar as it is no longer a question of compensating for a slight failure to score, but to carry out the pointing itself.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Radio Relay Systems (AREA)

Claims (4)

  1. Antennenträger mit einstellbarer Ausrichtung, insbesondere für eine auf einen Satelliten ausgerichtete Telekommunikationsantenne mit:
    - einem ersten Dieder (ABC,BCD), dessen eine Fläche (ABC) von einer Trägerbasis (10) getragen wird,
    - Einrichtungen (6) zur Einstellung des Winkels (α) dieses ersten Dieders,
    dadurch gekennzeichnet, daß er außerdem aufweist:
    - ein zweites Dieder (BCD,BDE), dessen eine Fläche gemeinsam mit dem ersten Dieder ist und dessen andere Fläche (BDE) Trägereinrichtungen (8) der Antenne (9) trägt, wobei die Achse (BC) des ersten Dieders und die Achse (BD) des zweiten Dieders weder parallel noch übereinanderliegend sind; und
    - Einstelleinrichtungen (7) des Winkels (β) dieses zweiten Dieders.
  2. Träger gemäß Anspruch 1, mit:
    - einer ersten Struktur (1), die ein erstes Dreieck (ABC) definiert, das einstückig mit der Trägerbasis ausgebildet ist,
    - einer zweiten Struktur (2), die ein zweites Dreieck (BCD) definiert, wobei das erste und das zweite Dreieck eine gemeinsame Seite (BC) besitzen, die mit einer ersten gelenkigen Verbindung (4) derart ausgestattet ist, daß sie das erste Dieder bildet, wobei die Einstelleinrichtungen (6) des Winkels des ersten Dieders zwischen der Spitze (A) des ersten Dreiecks, die der Gelenkseite gegenüberliegt, und der Spitze (B) des zweiten Dreiecks, die derselben Seite gegenüberliegt, zwischengesetzt sind; und
    - einer dritten Struktur (3), die ein drittes Dreieck (BDE) definiert, wobei das zweite und das dritte Dreieck eine gemeinsame Seite (BD) besitzen, die mit einer zweiten gelenkigen Verbindung (5) derart ausgestattet ist, daß sie das zweite Dieder bildet, wobei die Einstelleinrichtungen (7) des Winkels des zweiten Dieders zwischen der Spitze (D) des zweiten Dreiecks, die der Gelenkseite gegenüberliegt, und der Spitze (E) des dritten Dreiecks, die derselben Seite gegenüberliegt, zwischengesetzt sind.
  3. Träger gemäß Anspruch 2, bei dem die Einstelleinrichtungen des ersten und zweiten Dieders derart von den Strukturen trennbar sind, daß ein flaches Zusammenlegen des Trägers durch Schließen der beiden Dieder ermöglicht wird.
  4. Träger gemäß Anspruch 1, bei dem die Einstelleinrichtungen (6, 7) der Winkel des ersten und zweiten Dieders von Rechnereinrichtungen (26) gesteuert werden, die geeignet sind, in EL-Winkeln (S) und Azimut-Winkeln (A) ausgedrückte Einstellwerte in direkte Steuersignale für die Position dieser Einstelleinrichtungen umzuwandeln.
EP93920932A 1992-09-25 1993-09-24 Antennenträger mit steuerbarer ausrichtung, insbesondere für antenne zur satelliten-kommunikation Expired - Lifetime EP0662254B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9211445 1992-09-25
FR9211445A FR2696281B1 (fr) 1992-09-25 1992-09-25 Monture d'antenne à pointage réglable, notamment pour antenne de télécommunications par satellite.
PCT/FR1993/000937 WO1994008360A1 (fr) 1992-09-25 1993-09-24 Monture d'antenne a pointage reglable, notamment pour antenne de telecommunications par satellite

Publications (2)

Publication Number Publication Date
EP0662254A1 EP0662254A1 (de) 1995-07-12
EP0662254B1 true EP0662254B1 (de) 1996-12-04

Family

ID=9433887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93920932A Expired - Lifetime EP0662254B1 (de) 1992-09-25 1993-09-24 Antennenträger mit steuerbarer ausrichtung, insbesondere für antenne zur satelliten-kommunikation

Country Status (10)

Country Link
US (1) US5852423A (de)
EP (1) EP0662254B1 (de)
JP (1) JP2853815B2 (de)
AT (1) ATE146014T1 (de)
CA (1) CA2145540A1 (de)
DE (1) DE69306408T2 (de)
DK (1) DK0662254T3 (de)
ES (1) ES2097541T3 (de)
FR (1) FR2696281B1 (de)
WO (1) WO1994008360A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA200001206A1 (ru) 1998-05-20 2001-10-22 Л-3 Коммьюникейшнз Эсско, Инк. Многолучевая антенна для спутниковой связи, антенная система (варианты)
US6404400B1 (en) 2001-01-30 2002-06-11 Andrew Corporation Antenna mount assembly
EP1412797A1 (de) * 2001-07-17 2004-04-28 Sieb & Meyer Aktiengesellschaft SPIEGELVERSTELLVORRICHTUNG INSBESONDERE FüR LASERBEARBEITUNGSMASCHINEN
US7357323B2 (en) * 2003-04-07 2008-04-15 Silverbrook Research Pty Ltd Obtaining product item assistance
JP5138094B2 (ja) 2009-04-28 2013-02-06 パナソニック株式会社 受信装置
US9118106B2 (en) * 2012-03-07 2015-08-25 Verizon Patent And Licensing Inc. Variable orientation antenna platform
US9376221B1 (en) * 2012-10-31 2016-06-28 The Boeing Company Methods and apparatus to point a payload at a target
RU195909U1 (ru) * 2019-11-21 2020-02-11 Алексей Георгиевич Петропавловский Опорно-поворотное устройство для ориентации антенны

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707721A (en) * 1954-10-05 1972-12-26 Sperry Rand Corp Servo control system
FR2252663B1 (de) * 1973-11-22 1978-12-01 Gueguen Michel
GB1602194A (en) * 1978-05-31 1981-11-11 Marconi Co Ltd Tracking structures for antennas
DE3605905A1 (de) * 1985-02-25 1986-09-04 DX Antenna Co., Ltd., Kobe Verfahren und einrichtung zum automatischen verfolgen eines satelliten mit einer empfangsantenne
ATE55513T1 (de) * 1985-11-15 1990-08-15 Siemens Ag Tragegestell fuer eine satellitenfunkparabolreflektorantenne.
DE3643963A1 (de) * 1986-12-22 1987-12-17 Krupp Gmbh Traggestell eines reflektors

Also Published As

Publication number Publication date
JPH08503108A (ja) 1996-04-02
FR2696281B1 (fr) 1994-11-04
US5852423A (en) 1998-12-22
EP0662254A1 (de) 1995-07-12
FR2696281A1 (fr) 1994-04-01
ATE146014T1 (de) 1996-12-15
ES2097541T3 (es) 1997-04-01
CA2145540A1 (fr) 1994-04-14
WO1994008360A1 (fr) 1994-04-14
JP2853815B2 (ja) 1999-02-03
DE69306408T2 (de) 1997-03-27
DE69306408D1 (de) 1997-01-16
DK0662254T3 (da) 1996-12-23

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