EP0077250A1 - Support d'antenne destinée à capter des émissions de télévision provenant d'un satellite géostationnaire, et ensemble formé par un tel support et son antenne - Google Patents

Support d'antenne destinée à capter des émissions de télévision provenant d'un satellite géostationnaire, et ensemble formé par un tel support et son antenne Download PDF

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Publication number
EP0077250A1
EP0077250A1 EP82401799A EP82401799A EP0077250A1 EP 0077250 A1 EP0077250 A1 EP 0077250A1 EP 82401799 A EP82401799 A EP 82401799A EP 82401799 A EP82401799 A EP 82401799A EP 0077250 A1 EP0077250 A1 EP 0077250A1
Authority
EP
European Patent Office
Prior art keywords
mast
antenna
collar
support according
support
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.)
Withdrawn
Application number
EP82401799A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jean-Yves Repussard
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.)
Thomson-Brandt SA
Original Assignee
Thomson-Brandt SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomson-Brandt SA filed Critical Thomson-Brandt SA
Publication of EP0077250A1 publication Critical patent/EP0077250A1/fr
Withdrawn legal-status Critical Current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 support intended to receive emissions, in particular from television, coming from a geostationary satellite as well as to the assembly formed by such a support and its antenna.
  • the satellite being geostationary the parabolic reflector must have a well-determined position, adjusted once and for all.
  • the adjustment which must be carried out during the installation of such an antenna must be simple so that it can be implemented by persons not having particular knowledge of mechanics.
  • This support comprises a steering post fixed relative to the ground, in particular the vertical direction, which can rotate around its longitudinal axis to adjust the azimuth of the antenna and an articulated quadrilateral of which one side constitutes a part of the antenna and another side is a part of the pole, the length of this part of the pole being adjustable and determining the site of the antenna.
  • Such a support is easily adjustable and can be manufactured inexpensively.
  • the invention aims to improve the support described in this patent application so that its installation is even easier without complicating its manufacture.
  • the support according to the invention is therefore of the type of that of patent application 35930, that is to say comprising a quadrilateral or other articulated polygon of which one side constitutes a part of the antenna and another side, of length adjustable, is part of the. pole, and it is characterized in that one of the other sides, lying between the pole and the antenna, also has an adjustable length so as to allow additional adjustment of the antenna site.
  • the adjustment of the length of the side forming part of the post can constitute an approximate adjustment of the antenna site while the fine adjustment is obtained by adjusting the length of the other side.
  • the side of adjustable length between the antenna and the post comprises an arm articulated by one of its ends to the antenna and, to allow the length adjustment, the other end of this arm is curved and sliding in a ring or necklace secured to the post.
  • the fine adjustment is obtained by a simple sliding movement.
  • said ring in which slides the curved end on the side of adjustable length, is also sliding on the post.
  • the same control means can be provided to block the ring, thus in two parts, respectively on the post and on the arm with curved end; so that the approximate adjustment precedes the fine adjustment it is then preferable for the double ring to be such that the blocking on the post is obtained before the blocking on the curved end.
  • the clearance between the ring and the post is less than the clearance between this ring and the curved end.
  • the invention also relates to the case where only the side between the post and the reflector is of variable length, the adjustment of the site being thus obtained only by adjusting the length of this side.
  • the invention relates to an antenna support comprising a fixed, especially vertical, steering mast relative to the ground, and which can rotate about its axis. longitudinal to adjust the azimuth of the antenna and a polygon, such as a quadrilateral, articulated of which one side constitutes a part of the antenna and another side is a part of the pole, this support being characterized in that a side of this polygon between the mast and the antenna has an adjustable length to allow adjustment of the antenna site thanks to a curved end sliding in a collar secured to the mast.
  • the antenna 1 ( Figure 1) is intended to receive television broadcasts from a geostationary satellite. It includes a reflector in the shape of an axis 2 axis directed towards the satellite. This reflector reflects the waves on a sensor (not shown) connected by cable to one or more television receivers.
  • the orientation of axis 2 is therefore carried out once and for all during the installation of the antenna. This setting of the direction of the axis 2 must however be able to be modified to take account of a possible change of position of the satellite or of the replacement of this satellite by another.
  • the support comprises a vertical mast or post 3 constituted by a metal tube of circular section fixed by two flanges respectively lower 4 and upper 5 to a wall 6 or another fixed element.
  • the upper end 7 of the mast 3 protrudes above the flange 5.
  • the flanges 4 and 5 are provided with bolts and clamping nuts 8 to hold the mast 3 in these flanges. Thus, before tightening, the mast can rotate around its vertical axis 3a to adjust the azimuth of the reflector 1.
  • the mast 3 is connected to a stiffener 9 secured to the rear face of the reflector 1 by means of an arm 10 inclined at approximately 45 ° relative to the horizontal and in the shape of a stirrup and of a tubular arm 11 These two arms are articulated to the stiffener 9.
  • the arm 10 has the general shape of a stirrup with two branches 12 and 13 which diverge from a base 14 (FIG. 2) and however terminate in parallel ends 12a and 13a crossed by rods of bolts 14a and 15 whose axes are in extension and which also cross branches 16 and 17 of brackets whose other branches are fixed to, and applied against, the rear face of the stiffener 9. In this way when the nuts cooperating with the bolts 14a and 15 the branches 12 and 13 are not tightened and are articulated to the branches 16 and 17 of the brackets fixed to the reflector 1.
  • the base 14, the test length of which is greater than the diameter of the tube 3, is introduced into a slot 19 (FIGS. 4 and 5), inclined at 43 ° relative to the horizontal, which has the upper end 7 of the mast 3.
  • the ends 20 and 21 of this slot are, in the example, diametrically opposite.
  • the central part of the base 14 includes a slot 22 in the form of an arc of a circle limiting a tab or tongue 23 attached to the rest of the base 14 along the fictitious line 24 connecting the ends of the slot 22.
  • An edge 25 of the base 14 has two notches 26 and 27 into which penetrate the parts of the wall of the tube 3 adjoining the ends 20 and 21 of the slot 19. In this way the arm 10 has a very precise position relative to the mast .
  • the fixing of the stirrup 10 to the mast is obtained by moving away from the base 14, opposite the branches 12 and 13, the tongue 23 after introduction of the base into the slot 19 (FIG. 6). Under these conditions, the end 28 opposite the line 24 is in abutment against the internal surface of the tube 3. The attachment of the arm 10 to the tube 3 is thus carried out in a particularly simple manner using a cut tongue.
  • a tool is inserted through the upper opening 7a of the tube and a vertical thrust is directed downwards.
  • the arm 11 ends in a slot into which is inserted a branch 30 projecting from a base applied against, and fixed to, the external face of the stiffener 9.
  • the threaded rod of a bolt 31 passes through this end of the arm 11 and the branch 30.
  • the arm 11 which is like the mast 3 constituted by a tube, ends in a curved part 32 constituting in the example an arc of a circle whose concavity is turned towards the reflector.
  • This curved part 32 is sliding inside a first part 33 of a collar 34 having a second part 35 mounted around the mast 3 (FIG. 7).
  • the central part of the collar 34 is crossed by a rod 36 of horizontal axis of a bolt 36a cooperating with a nut 37 outside the collar and separated from the latter by a washer 37a.
  • the collar 34 comprises a single metal blade shaped to present at its ends two cylindrical bulges forming the parts 33 and 35.
  • the end edges 38 and 39 of this blade are on the side of the part 33.
  • the intermediate part, crossed by the rod 36 of the bolt 36a, has facing sections 40 and 41 which are substantially planar.
  • the diameter R 1 of the part 35 and the external diameter of the mast 3 as well as the diameter R 2 of the part 33 and the external diameter of the curved end 32 of the arm 11 are such that before tightening the clearance between the mast 3 and the part 35 is less than the clearance between the curved end 32 and the part -33 of the collar. In this way, when the nut 37 is screwed onto the rod 36, the collar 34 is first blocked on the mast 3 before being blocked on the curved end 32.
  • the nut 37 and the nuts cooperating with the bolts 14a, 15 and 31 are in a position such that the corresponding connections are joints and that the collar 34 can slide on the mast 3 and that the butt 32 at the end of the arm 11 can slide inside said collar 34.
  • an approximate adjustment of the site is then carried out by sliding the collar 34 on the mast 3 between the flanges 4 and 5.
  • the site is thus adjusted to within a few degrees.
  • the nut 37 is tightened so that the collar is tightened on the mast 3 without, however, the butt 32 itself being blocked in the collar.
  • the fine adjustment is obtained by sliding the stock 32 inside the part 33 of the collar 34.
  • the reflector 1 can tilt around the axis of the bolts 14a and 15 and the axis 31 moves according to the circle 45 in broken lines in FIG. 1.
  • the nut 37 is turned so that the collar is tightened on the stock 32 and the nuts on the support joints on the rear side of the reflector are also tightened so that the assembly is rigid.
  • the two adjustments mentioned above allow the site to be varied by an angle of approximately 90 "or more.
  • the fine adjustment, by actuation of the stock 32, allows, in the example, a variation of the site of the order of 20 °.
  • the internal surface of the part 33 of the collar 34 has, instead of the cylindrical shape, substantially the shape of a torus segment which constitutes the part of the stock 32 housed in the part 33 of the collar 34.
  • the embodiment shown in Figure 8 differs from that shown in Figure 7 in that the collar 34 1 , also formed by a single metal blade, has lips 46 and 47 extending part 33 1 and which are crossed by a bolt rod 48 cooperating with a nut 49 to perfect the tightening of this collar on the stock 32.
  • the collar 34 2 shown in FIG. 9 is formed by two separate blades 50 and 51, the part 35 2 thus being open at its end, like the part 33 2 or the part 33 of FIG. 7.
  • the collar 34 3 has two blades 52 and 53, but these are linked to each other by a hinge 54 in the part 35 3 opposite the rod 36 3 of bolt.
  • the mast 3 is planted in the ground or is secured to a base.

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  • Aerials With Secondary Devices (AREA)
EP82401799A 1981-10-09 1982-10-01 Support d'antenne destinée à capter des émissions de télévision provenant d'un satellite géostationnaire, et ensemble formé par un tel support et son antenne Withdrawn EP0077250A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8119077 1981-10-09
FR8119077A FR2514570A1 (fr) 1981-10-09 1981-10-09 Support d'antenne destinee a capter des emissions de television provenant d'un satellite geostationnaire et ensemble forme par un tel support et son antenne

Publications (1)

Publication Number Publication Date
EP0077250A1 true EP0077250A1 (fr) 1983-04-20

Family

ID=9262911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401799A Withdrawn EP0077250A1 (fr) 1981-10-09 1982-10-01 Support d'antenne destinée à capter des émissions de télévision provenant d'un satellite géostationnaire, et ensemble formé par un tel support et son antenne

Country Status (3)

Country Link
EP (1) EP0077250A1 (enrdf_load_stackoverflow)
AU (1) AU8925582A (enrdf_load_stackoverflow)
FR (1) FR2514570A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536591A1 (fr) * 1982-11-23 1984-05-25 Thomson Brandt Support d'antenne de telecommunications par satellite geostationnaire et ensemble forme par un tel support et son antenne
US5402139A (en) * 1991-02-21 1995-03-28 Sony Corporation Antenna and mounting arrangement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111082199B (zh) * 2020-03-09 2021-04-23 祁爱军 一种含清洗功能的卫星锅

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623115A (en) * 1968-12-07 1971-11-23 Telefunken Patent Directional antenna
DE2204448A1 (de) * 1972-01-31 1973-08-09 Rohde & Schwarz Vorrichtung zum biaxialen verschwenken des reflektors einer richtantenne, insbesondere einer mobilen satellitenverfolgungsanlage
US4126865A (en) * 1975-11-11 1978-11-21 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Satellite tracking dish antenna
FR2471058A3 (fr) * 1979-12-07 1981-06-12 Thomson Brandt Support d'antenne pour reception de satellite geo-stationnaire, et antenne munie d'un tel support
EP0035930A1 (fr) * 1980-03-11 1981-09-16 Société S E R E L Support d'antenne de réception d'émissions d'un satellite géostationnaire, et antenne comportant un tel support

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623115A (en) * 1968-12-07 1971-11-23 Telefunken Patent Directional antenna
DE2204448A1 (de) * 1972-01-31 1973-08-09 Rohde & Schwarz Vorrichtung zum biaxialen verschwenken des reflektors einer richtantenne, insbesondere einer mobilen satellitenverfolgungsanlage
US4126865A (en) * 1975-11-11 1978-11-21 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Satellite tracking dish antenna
FR2471058A3 (fr) * 1979-12-07 1981-06-12 Thomson Brandt Support d'antenne pour reception de satellite geo-stationnaire, et antenne munie d'un tel support
EP0035930A1 (fr) * 1980-03-11 1981-09-16 Société S E R E L Support d'antenne de réception d'émissions d'un satellite géostationnaire, et antenne comportant un tel support

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FUNKSCHAU, vol. 52, no. 14, juillet 1980, pages 45-48, Munich (DE); *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536591A1 (fr) * 1982-11-23 1984-05-25 Thomson Brandt Support d'antenne de telecommunications par satellite geostationnaire et ensemble forme par un tel support et son antenne
EP0112205A1 (fr) * 1982-11-23 1984-06-27 Thomson-Brandt Support d'antenne de télécommunications par satellite géostationnaire et ensemble formé par un tel support et son antenne
US5402139A (en) * 1991-02-21 1995-03-28 Sony Corporation Antenna and mounting arrangement

Also Published As

Publication number Publication date
FR2514570A1 (fr) 1983-04-15
AU8925582A (en) 1983-04-14
FR2514570B1 (enrdf_load_stackoverflow) 1983-12-02

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19830427

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19850326

RIN1 Information on inventor provided before grant (corrected)

Inventor name: REPUSSARD, JEAN-YVES