EP0144672B1 - Réflecteur-filet pliable pour antenne - Google Patents

Réflecteur-filet pliable pour antenne Download PDF

Info

Publication number
EP0144672B1
EP0144672B1 EP84112745A EP84112745A EP0144672B1 EP 0144672 B1 EP0144672 B1 EP 0144672B1 EP 84112745 A EP84112745 A EP 84112745A EP 84112745 A EP84112745 A EP 84112745A EP 0144672 B1 EP0144672 B1 EP 0144672B1
Authority
EP
European Patent Office
Prior art keywords
reflector
mesh
ribs
auxiliary
aerial according
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
Application number
EP84112745A
Other languages
German (de)
English (en)
Other versions
EP0144672A3 (en
EP0144672A2 (fr
Inventor
Henning Dipl.-Ing. Herbig
Horst Heinze
Franz Drachenberg
Knud Pontoppidan
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
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 Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of EP0144672A2 publication Critical patent/EP0144672A2/fr
Publication of EP0144672A3 publication Critical patent/EP0144672A3/de
Application granted granted Critical
Publication of EP0144672B1 publication Critical patent/EP0144672B1/fr
Expired 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
    • H01Q15/161—Collapsible reflectors

Definitions

  • the invention relates to a deployable antenna network reflector according to the preamble of patent claim 1.
  • Such an antenna network reflector is known from "Zeitschrift für Flugschen und Kunststoffforschung", 1980, page 264. There it is a deployable offset reflector with folding ribs and adjustable mesh reflector. Radially swiveling support ribs are attached to a central support body. The reflector network is attached to these. Furthermore, tension wires are drawn between the support ribs and essentially transversely to them, which ends are fastened to the support ribs. Network tensioning points are provided over the length of these tensioning wires, at which the reflector network is fastened to the tensioning wires in an adjustable manner by means of adjusting wires or adjusting pieces. In order to give the reflector network the desired, mostly parabolic shape with the greatest possible accuracy, the corresponding adjustment work must be carried out at all network tensioning points. This requires a very large adjustment effort, which should be avoided as far as possible.
  • the network reflector described there has, in addition to the reflector network attached to the top of the pivoting support ribs, a further adjustment network attached to the rear sides of the support ribs. The latter is connected to the reflector network in the sectors located between the radially swung out support ribs via a plurality of adjustable tensioning wires.
  • the aim of the adjustable tensioning wires is to ensure that the reflector network in the unfolded state between the supporting ribs assumes the desired parabolic shape that is already predetermined by this.
  • the invention has for its object to provide a deployable antenna network reflector of the type mentioned, in which the adjustment effort to set the desired parabolic shape of the reflector network is as low as possible.
  • the reflector network assumes a constant curvature from the outset, at least in the area of these auxiliary ribs, in the unfolded state of the network reflector, because the pointed sinks in the reflector network associated with the point-by-point adjustment at a large number of individual network tension points occur not up here. No further adjustment points are provided between the auxiliary ribs and the support ribs or between the auxiliary ribs themselves. The total adjustment effort can thus be significantly reduced. In addition, the number of relatively heavy support ribs can be reduced, which has a favorable effect on the total weight of the satellite.
  • the total number of ribs used can be increased by using the auxiliary ribs, which in turn brings about an improvement in the radiation properties.
  • So z. B. the location and number of side lobes of the radiation diagram appearing next to the main lobe depends on how many ribs are used in total. The more parabolic ribs there are, the further the side lobes move outwards.
  • the antenna network reflector according to the invention thus represents a simple and inexpensive concept which will be applicable to advantage in many cases.
  • a deployed antenna network reflector is shown in plan view in FIG. 1a.
  • the network reflector has a total of 12 support ribs 3, as well as 12 auxiliary ribs 4 arranged in the sectors between the support ribs 3. that should take the form of a paraboloid of revolution as precisely as possible.
  • the network consists of metal wire or metallized threads, for example of plastic. Depending on the requirements The permissible mesh size is selected with regard to the operating wavelength.
  • the support ribs 3 are pivotally mounted on a support body 1 (see FIG. 1b) in such a way that they can be pivoted vertically upwards from the unfolded state shown in FIGS. 1a and 1b.
  • the material of the support ribs 3 should be chosen so that the ribs have a high inherent rigidity and are at the same time as light as possible. Fiber-reinforced plastics are particularly suitable for this.
  • the length of the spacers 16 is adapted to the desired parabolic shape.
  • the auxiliary ribs 4 are not attached to the carrier body 1, but only to the reflector net 2, preferably on the upper side thereof, for example glued or sewn. They are put under tension from the underside of the reflector network 2 by tension wires 5, which are only shown schematically here and are fastened to the supporting ribs 3.
  • tension wires 5 which are only shown schematically here and are fastened to the supporting ribs 3.
  • adjusting pieces 6 see also FIGS. 2 and 3 can be provided, the auxiliary ribs 4 obviously having to have a certain flexibility.
  • one or more auxiliary ribs 4 can be fastened to the reflector network 2 between two supporting ribs 3.
  • cuts are shown transversely to the supporting ribs 3, which in this case are designed as hollow profiles.
  • the reflector mesh 2 is attached to the top of the support ribs 3 by means of spacers 16.
  • the auxiliary ribs 4 are expediently on the top of the reflector network 2.
  • the adjusting pieces 6 serve to hold the tensioning wires 5, which are each anchored on the underside of the support ribs 3.
  • the direction of action of the tensioning wires 5 must have a component directed transversely to the reflector net 2, so that the train required for adjusting the auxiliary ribs, directed downwards or towards the rear of the reflector net 2, results. Quartz threads, for example, can be used as tension wires 5.
  • FIG. 3 shows a possible embodiment of the adjustment pieces 6, which are only indicated schematically in FIGS. 2a to 2c.
  • a part of the reflector network 2 is shown in cross section, an auxiliary rib 4 extending transversely to the plane of the drawing and resting on the top of the reflector network 2. as well as the actual adjustment piece 6.
  • the latter consists of a plate 10 which is firmly connected to a hollow tube 9 and which rests on the underside of the reflector network 2 and is connected to the auxiliary rib 4, for example, via rivet connections 17.
  • an axially displaceable, designed as a sliding sleeve 7 mounting piece is provided in the hollow tube 9.
  • This sliding sleeve 7 has on its outer surface two mutually opposite, axially parallel grooves 18 into which two corresponding cams 19 attached to the inside of the hollow tube 9 engage.
  • the sliding sleeve 7 has a threaded bore 20, expediently with a rotation lock, which corresponds to a threaded bolt 8, the head 21 of which in turn is mounted in a corresponding depression in the plate 10. Except for a small amount of play, the threaded bolt 8 cannot be moved in the axial direction, for example due to a locking pin 22 inserted below the head 21. Rotation of the threaded bolt 8 clearly leads to the sliding sleeve 7 being moved up or down in the axial direction .
  • the tensioning wires 5, which are anchored at the lower end of the sliding sleeve 7, and the reflector net 2 with the auxiliary rib 4 mounted thereon are put under more or less tension.
  • the auxiliary ribs 4 can therefore at the points where the adjusting pieces 6 engage, more or less downwards, i.e. towards the back of the reflector net.
  • a cross section through three supporting ribs 3 in the folded state is shown in a highly schematic manner.
  • the likewise folded reflector net 2 carries an auxiliary rib 4 with the associated adjusting pieces 6 between each two supporting ribs 3.
  • the latter and thus the auxiliary ribs 4 can be attached to the spacers 16 of the supporting ribs 3 with the aid of detachable mounting brackets 11 which can be reinserted or latched when the antenna is folded up again anchored.
  • This anchorage should be maintained during the start and transport phase.
  • This has the advantage that the auxiliary ribs 4 and adjusting pieces 6 assume a defined spatial position during this phase, which is associated with strong vibrations and loads, and the adjusting pieces cannot get tangled in the reflector network.
  • the reflector network is only free in the relatively narrow areas between the ribs and is only under the loads of its own mass during the start phase, in contrast to the double network concept discussed above, where the reflector network is still separated from the mass of the adjustment network and the tensioning wires and their adjustment elements during the start accelerations is charged.
  • auxiliary ribs not shown, which are adjacent to the supporting ribs 13 and attached to the reflector network 2 above or below the plane of the drawing, care must of course be taken to ensure that these have the required flexibility at the folding points 23 of the reflector network 2.
  • joint regions 12 can be provided at the corresponding locations of the auxiliary ribs 14, which are designed to be correspondingly flexible. This can be done in the case of auxiliary ribs 14 made of fiber-reinforced plastic in that the joint regions 12 are formed only from the fibers without the addition of synthetic resin.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)

Claims (8)

1. Réflecteur d'antenne en treillis déployable, comprenant une pluralité de nervures de support (3) rigides qui sont montées sur un corps de support (1) de manière à pouvoir pivoter radialement et portent un treillis de réflecteur (2) métallique, et des fils de tension (5) tirés de façon sensiblement perpendiculaire aux nervures de support (3) et ancrés à une de leurs extrémités sur ces nervures, caractérisé par le fait qu'entre les nervures de support (3) sont disposées en un agencement radial une ou plusieurs nervures auxiliaires (4) qui sont fixées uniquement au treillis de réflecteur (2) et sur lesquelles l'autre extrémité des fils de tension (5) est fixée de manière ajustable, la direction d'action des fils de tension (5) présentant, à l'état déployé du réflecteur en treillis, aussi une composante transversale par rapport à la surface couverte par le treillis de réflecteur (2).
2. Réflecteur d'antenne en treillis selon la revendication 1, caractérisé par le fait que les nervures auxiliaires (4) sont pourvues à plusieurs emplacements, répartis sur leur longueur, de pièces d'ajustage (6) particulières qui comportent chacune des pièces de maintien (7), déplaçables perpendiculairement au treillis de réflecteur (2), pour les fils de tension (5).
3. Réflecteur d'antenne en treillis selon la revendication 2, caractérisé par le fait que les pièces de maintien (7) sont des douilles coulissantes déplaçables axialement dans un tube creux (9) à l'aide d'une tige filetée (8) axiale et chaque tube creux (9) est relié à un disque (10) qui est appliqué contre la face arrière du treillis de réflecteur (2) et fixé à la nervure auxiliaire (4).
4. Réflecteur d'antenne en treillis selon l'une des revendications précédentes, caractérisé par le fait qu'à l'état replié du réflecteur en treillis, les nervures auxiliaires (4) sont fixées de façon amovible au moyen d'étriers de maintien (11) aux nervures de support (3) adjacentes de part et d'autre.
5. Réflecteur d'antenne en treillis selon l'une des revendications précédentes, caractérisé par le fait qu'en cas d'utilisation de nervures de support (13) repliables une ou plusieurs fois sur elles- mêmes, les nervures auxiliaires (14) présentent des zones d'articulation (12) flexibles.
6. Réflecteur d'antenne en treillis selon l'une des revendications précédentes, caractérisé par le fait que les nervures auxiliaires (4, 14) sont en matière plastique renforcée par fibres.
7. Réflecteur d'antenne en treillis selon les revendications 5 et 6, caractérisé par le fait que les zones d'articulation (12) des nervures auxiliaires (14) formées de matière plastique renforcée par fibres sont constituées par les fibres (15) sans addition de résine synthétique.
8. Réflecteur d'antenne en treillis selon la revendication 7, caractérisé par le fait que l'on utilise comme fibres (15) des fibres d'aramide ou de carbone.
EP84112745A 1983-10-27 1984-10-23 Réflecteur-filet pliable pour antenne Expired EP0144672B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3338937 1983-10-27
DE19833338937 DE3338937A1 (de) 1983-10-27 1983-10-27 Entfaltbarer antennen-netzreflektor

Publications (3)

Publication Number Publication Date
EP0144672A2 EP0144672A2 (fr) 1985-06-19
EP0144672A3 EP0144672A3 (en) 1986-07-30
EP0144672B1 true EP0144672B1 (fr) 1989-09-06

Family

ID=6212831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112745A Expired EP0144672B1 (fr) 1983-10-27 1984-10-23 Réflecteur-filet pliable pour antenne

Country Status (5)

Country Link
US (1) US4642652A (fr)
EP (1) EP0144672B1 (fr)
JP (1) JPS60173904A (fr)
CA (1) CA1226935A (fr)
DE (1) DE3338937A1 (fr)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3532851A1 (de) * 1985-09-14 1987-04-16 Messerschmitt Boelkow Blohm Entfalt- und wiedereinfaltbarer antennenreflektor
JPS6286715U (fr) * 1985-11-19 1987-06-03
JPS62181013U (fr) * 1986-05-08 1987-11-17
JPH057763Y2 (fr) * 1986-07-17 1993-02-26
JPS6330006U (fr) * 1986-08-08 1988-02-27
US4845511A (en) * 1987-01-27 1989-07-04 Harris Corp. Space deployable domed solar concentrator with foldable panels and hinge therefor
US4989015A (en) * 1987-10-26 1991-01-29 Hughes Aircraft Company Unfurlable mesh reflector
US4841305A (en) * 1988-02-01 1989-06-20 Dalsat, Inc. Method of sectioning an antennae reflector
US4893132A (en) * 1988-10-28 1990-01-09 Radiation Systems, Inc. Technical Products Division Assembly system for maintaining reflector segments of an antenna in precision alignment
DE4137974C2 (de) * 1991-11-19 1994-08-18 Guenther Boehmig Faltbarer Reflektor für eine Satellitenempfangsantenne
DE4229484C2 (de) * 1992-09-03 1994-10-06 Deutsche Aerospace Entfaltbarer Antennen-Netzreflektor
US5864324A (en) * 1996-05-15 1999-01-26 Trw Inc. Telescoping deployable antenna reflector and method of deployment
GB2318688A (en) * 1996-10-24 1998-04-29 Matra Marconi Space Uk Ltd Deployable reflector
JP3074377B2 (ja) 1997-03-06 2000-08-07 セイコーインスツルメンツ株式会社 端面研磨装置および研磨方法
US5969695A (en) * 1997-07-07 1999-10-19 Hughes Electronics Corporation Mesh tensioning, retention and management systems for large deployable reflectors
FR2776783B1 (fr) 1998-03-26 2000-06-16 Aerospatiale Dispositif escamotable, de type pare-soleil, pour un instrument optique tel qu'un telescope spatial
US6313811B1 (en) 1999-06-11 2001-11-06 Harris Corporation Lightweight, compactly deployable support structure
US6618025B2 (en) 1999-06-11 2003-09-09 Harris Corporation Lightweight, compactly deployable support structure with telescoping members
US6604844B2 (en) * 1999-06-20 2003-08-12 Richard Hussey Reconfigurable reflective apparatus
US6384800B1 (en) 1999-07-24 2002-05-07 Hughes Electronics Corp. Mesh tensioning, retention and management systems for large deployable reflectors
US6340956B1 (en) 1999-11-12 2002-01-22 Leland H. Bowen Collapsible impulse radiating antenna
CN102447156A (zh) * 2010-10-13 2012-05-09 中国科学院电子学研究所 伞式可展开网状天线
US9331394B2 (en) 2011-09-21 2016-05-03 Harris Corporation Reflector systems having stowable rigid panels
RU2503102C2 (ru) * 2011-09-29 2013-12-27 Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнева" Зонтичная антенна космического аппарата
RU2659761C2 (ru) * 2015-06-17 2018-07-03 Акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнева" Зонтичная антенна космического аппарата
CN105846044B (zh) * 2016-04-07 2018-07-03 西安交通大学 一种折叠式可展开伞状天线结构骨架及展开方法
CN107546465A (zh) * 2016-06-29 2018-01-05 中兴通讯股份有限公司 一种便携天线和机顶盒系统
IL255390B (en) * 2017-11-01 2022-07-01 Elta Systems Ltd Antenna reflector
WO2020036623A2 (fr) * 2018-01-08 2020-02-20 Umbra Lab, Inc. Réflecteur à nervure pliable articulé pour concentrer un rayonnement
US10727605B2 (en) 2018-09-05 2020-07-28 Eagle Technology, Llc High operational frequency fixed mesh antenna reflector
US10811759B2 (en) 2018-11-13 2020-10-20 Eagle Technology, Llc Mesh antenna reflector with deployable perimeter
US11139549B2 (en) 2019-01-16 2021-10-05 Eagle Technology, Llc Compact storable extendible member reflector
US10797400B1 (en) 2019-03-14 2020-10-06 Eagle Technology, Llc High compaction ratio reflector antenna with offset optics

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US3105969A (en) * 1960-12-23 1963-10-01 North American Aviation Inc Antenna reflector construction
US3360798A (en) * 1965-01-13 1967-12-26 James E Webb Collapsible reflector
DE1591291B1 (de) * 1967-10-24 1970-11-19 Augsburg Nuernberg Ag Zweignie Justierbare Halterung fuer Reflektorteilstuecke von Grossantennen,insbesondere Radioteleskopen
US4030103A (en) * 1975-12-10 1977-06-14 Lockheed Missiles & Space Company, Inc. Deployable offset paraboloid antenna
DE3124907A1 (de) * 1981-06-25 1983-01-13 Messerschmitt-Bölkow-Blohm GmbH, 8000 München "entfaltbarer antennen-netzreflektor"

Also Published As

Publication number Publication date
EP0144672A3 (en) 1986-07-30
DE3338937C2 (fr) 1988-07-28
CA1226935A (fr) 1987-09-15
JPH0568883B2 (fr) 1993-09-29
EP0144672A2 (fr) 1985-06-19
JPS60173904A (ja) 1985-09-07
DE3338937A1 (de) 1985-05-09
US4642652A (en) 1987-02-10

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