EP0205366A1 - Verfahren zur Herstellung einer Antenne - Google Patents

Verfahren zur Herstellung einer Antenne Download PDF

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Publication number
EP0205366A1
EP0205366A1 EP86401025A EP86401025A EP0205366A1 EP 0205366 A1 EP0205366 A1 EP 0205366A1 EP 86401025 A EP86401025 A EP 86401025A EP 86401025 A EP86401025 A EP 86401025A EP 0205366 A1 EP0205366 A1 EP 0205366A1
Authority
EP
European Patent Office
Prior art keywords
type
profile
sector
groove
branch
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Withdrawn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
EP86401025A
Other languages
English (en)
French (fr)
Inventor
Guy Nathan
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.)
ELENE SA
Original Assignee
ELENE SA
Societe National Elf Aquitaine
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 ELENE SA, Societe National Elf Aquitaine filed Critical ELENE SA
Publication of EP0205366A1 publication Critical patent/EP0205366A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01Q15/165—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal composed of a plurality of rigid panels
    • H01Q15/166—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal composed of a plurality of rigid panels sector shaped

Definitions

  • the present invention relates to a method for mounting an antenna, the antenna thus obtained and the various elements allowing the implementation of the method.
  • the method applies in particular to antennas of the parabolic type or with flat portions of reflectors approximating a surface of revolution.
  • a first object of the invention is to overcome the drawbacks of the prior art and to propose a method of mounting an antenna requiring no particular and faster means.
  • the profiles of the first type consist of a U-shaped rail and the central part of which comprises a T-shaped groove with the central leg of the T turned towards the outside of the U while the head of the T is in the crotch of the U.
  • the profile of the second type has substantially the shape of an L-whose first branch is extended by a hooking beak parallel to a second branch and whose second branch has a groove whose axis of symmetry is parallel to the faces of the second branch.
  • the length of the hooking spout is less than the width of the groove, reduced by the thickness of the first branch of the profile of the second type.
  • the fixing corner has a thickness equal to the width of the groove of the profile of the first type, reduced by twice the thickness of the first branch of the profile of the second type.
  • each sector of expanded metal is assimilated to straight portions, on the long sides of the sector.
  • FIG. 1 represents an antenna the reflector (1) of which is composed of sectors (1A, .18, 1C, etc.) fixed along generators (11) constituted by the upper sections (22) of carcass elements ( 2).
  • the carcass elements (2) are mounted radially on a central core (3).
  • This central core (3) is itself mounted, by means of an articulation, not shown, with two degrees of freedom, on a pylon or support base.
  • the central core (3) consists of a section (33) in U-shaped, circularly arranged and connected by radial crosspieces (34, 35) to a central coil (30).
  • This central coil (30) is mounted on the wheel thus formed by welding or screwing its side blank (32).
  • the carcass elements (2) are manufactured in the factory _ on a template which makes it possible to give the profile (22) the desired curve. Then, the profiles (21 and 20) are placed in the template and the profile - (21) or (20) is connected to the profile (22) by triangulation beams (23).
  • profile (22) For the construction of the carcass elements (2) is used as profile (22) a profile of the first type shown in section in Figure - (3).
  • This profile (22) has a substantially U-shaped section whose legs are formed by the parts (221, 222) and the central part (220) has a T-shaped groove (223) at its center.
  • This groove has the shape of an inverted T whose central leg consists on either side of an axis of symmetry by the surfaces (224) perpendicular and adjacent to the surface (220) which form a width groove (1) opening on the surface of the central part (220) of the U towards the outside.
  • the surfaces (225) perpendicular and adjacent to the surfaces (220) form with the surface (226), parallel to the surface (220) and connecting the two surfaces (225) arranged on either side of an axis of symmetry, the part constituting the head of the T which is inside the crotch of the U.
  • the sections (20,21) can also be of the same type as the section (22), although this is not compulsory.
  • the profiles (23) constituting the triangulation its shape adapted to their mounting in the profiles (20,21,22).
  • the surface sectors constituting the reflector (1) are shown in FIG. 2. These sectors (10) made of expanded metal, such as aluminum, are formed by a set of linear cutouts (10d, 10e, 10f). The shape thus given by these linear cuts is a fairly good approximation of the developed shape (11) corresponding to the generatrices of these sectors. It will also be noted that the shape (11) is that adopted by the second type profiles which allow the mounting of these sectors on the first type profiles (22). The profiles of the second type (11a, 11b) are shown in FIG.
  • a bracket comprising a branch (110) of thickness (j) and two perpendicular branches (111, 112) arranged in parallel one relative to each other so as to constitute a groove (113) whose width corresponds to the thickness of the sectors of expanded metal (1 A, 1 B).
  • the branch (110) is extended by a branch (1101) of direction perpendicular to the direction of the branch (110) and parallel to the direction of the branches (111, 112).
  • This branch - (1101) has a length (g) such that (g) is less than or equal to the width (i) of the profile groove (22) minus the width (j) of a branch (110) of the profile of the second type (11).
  • This branch - (1101) has substantially the shape of a beak and it is housed in the T-groove, so that the beaks (1101) prevent the extraction of the profile - (11), after it has has been moved in the direction of the arrow (B) for the profile (11 a) and in the opposite direction to the arrow (B) for the profile (11 b), bearing on the surfaces (225), while the surface (112) rests on the surface (220).
  • the profile (11 a) associated with one of the edges of the surface sector of a reflector - (1A) is introduced into the groove (223) and then the profile (11 b) associated with the adjacent edge of the surface (1B) adjacent to the sector (1 A) in the groove (223) and this profile (11b) is moved in the opposite direction from that of the profile (11a).
  • a fixing wedge (4) is inserted between the two profiles (11 a and 11b), which separates the two profiles - (11 a and 11 b) by pushing them into the groove so that the spouts (1101) penetrate in the head of the T.
  • the mounting of the antenna is carried out in the following way: On the base constituted by the pylon, there is an articulation with two degrees of freedom on which one comes to fix the central core - (3).
  • the carcass elements (2) constituting the generators of the solid formed by the reflector (1) of the antenna are hoisted one by one to the top of the structure and assembled by bolting on the rail (33) on the one hand, and on the sides (31 and 32) of the coil (30) on the other hand.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Support Of Aerials (AREA)
EP86401025A 1985-05-30 1986-05-13 Verfahren zur Herstellung einer Antenne Withdrawn EP0205366A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8508121A FR2582895B1 (fr) 1985-05-30 1985-05-30 Procede de montage d'une antenne et antenne ainsi obtenue.
FR8508121 1985-05-30

Publications (1)

Publication Number Publication Date
EP0205366A1 true EP0205366A1 (de) 1986-12-17

Family

ID=9319684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401025A Withdrawn EP0205366A1 (de) 1985-05-30 1986-05-13 Verfahren zur Herstellung einer Antenne

Country Status (5)

Country Link
EP (1) EP0205366A1 (de)
JP (1) JPS61277209A (de)
BR (1) BR8602471A (de)
FR (1) FR2582895B1 (de)
ZA (1) ZA863901B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2735286A1 (fr) * 1995-06-09 1996-12-13 Alcatel Telspace Systeme d'assemblage rapide et precis d'elements, notamment constitutifs d'une antenne
CN103779665A (zh) * 2013-09-18 2014-05-07 贵州振华天通设备有限公司 一种提高天线主反射面精度的连接方法及结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3906140B2 (ja) * 2002-11-06 2007-04-18 株式会社東芝 反射鏡部品の支持構造
JP4911476B2 (ja) * 2008-08-01 2012-04-04 三菱電機株式会社 望遠鏡主鏡部装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074520A (en) * 1960-01-04 1963-01-22 Bell Telephone Labor Inc Continuity device
US4378560A (en) * 1980-05-22 1983-03-29 Khorsand Hossein M Reflector support structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074520A (en) * 1960-01-04 1963-01-22 Bell Telephone Labor Inc Continuity device
US4378560A (en) * 1980-05-22 1983-03-29 Khorsand Hossein M Reflector support structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2735286A1 (fr) * 1995-06-09 1996-12-13 Alcatel Telspace Systeme d'assemblage rapide et precis d'elements, notamment constitutifs d'une antenne
CN103779665A (zh) * 2013-09-18 2014-05-07 贵州振华天通设备有限公司 一种提高天线主反射面精度的连接方法及结构
CN103779665B (zh) * 2013-09-18 2017-02-22 贵州振华天通设备有限公司 一种提高天线主反射面精度的连接方法及结构

Also Published As

Publication number Publication date
FR2582895B1 (fr) 1987-08-28
ZA863901B (en) 1986-12-30
BR8602471A (pt) 1987-01-27
FR2582895A1 (fr) 1986-12-05
JPS61277209A (ja) 1986-12-08

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Legal Events

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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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Designated state(s): AT BE CH DE GB IT LI LU NL SE

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Owner name: ELENE S.A.

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Effective date: 19880909

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Effective date: 19890321

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Inventor name: NATHAN, GUY