EP0903807A2 - Procédé pour fabriquer une lentille pour une antenne - Google Patents

Procédé pour fabriquer une lentille pour une antenne Download PDF

Info

Publication number
EP0903807A2
EP0903807A2 EP98111130A EP98111130A EP0903807A2 EP 0903807 A2 EP0903807 A2 EP 0903807A2 EP 98111130 A EP98111130 A EP 98111130A EP 98111130 A EP98111130 A EP 98111130A EP 0903807 A2 EP0903807 A2 EP 0903807A2
Authority
EP
European Patent Office
Prior art keywords
lens
shell
antenna
lens core
coating layer
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Withdrawn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
EP98111130A
Other languages
German (de)
English (en)
Other versions
EP0903807A3 (fr
Inventor
Jürgen Lier
Jörg SCHNEEMANN
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.)
Telent GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0903807A2 publication Critical patent/EP0903807A2/fr
Publication of EP0903807A3 publication Critical patent/EP0903807A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
    • H01Q15/08—Refracting or diffracting devices, e.g. lens, prism formed of solid dielectric material

Definitions

  • the present invention relates to a method for Manufacture of an antenna lens consisting of a Lens core and a surrounding coating layer.
  • Antenna lenses made of a dielectric material are described in US Pat. No. 4,769,646. These antenna lenses can have planar or structured surfaces, depending on which beam shaping is to be achieved with them.
  • a known surface structure of an antenna lens is the so-called Fresnel structure.
  • dielectric materials for the lens which have a very high dielectric constant ( ⁇ > 9).
  • ceramic materials meet this requirement for a high dielectric constant.
  • the lens body which consists of a ceramic material, is surrounded by a coating layer in order to reduce reflections on the antenna lens as much as possible.
  • This coating layer is most effective if it consists of a material with a dielectric constant that corresponds approximately to the square root of the dielectric constant of the lens core made of ceramic material.
  • the coating layer with which the lens core is coated consists of a plastic.
  • the invention lies therefore based on the task of a manufacturing process to specify an antenna lens of the type mentioned at the outset, whose manufacturing outlay is as low as possible.
  • the liquid, powdery or pasty material becomes preferably introduced through an opening in the shell, which is then closed again.
  • material for the lens core comes e.g. Plastics and mixtures of Plastic with ceramic materials in question.
  • the antenna lens are in a first Process step two rigid partial shells 1 and 2 manufactured according to the desired Surface structure of the lens are shaped.
  • the illustrated embodiment is the surface of the two partial shells 1 and 2 smooth. Deviating from this, however any other remaining structure, e.g. Fresnel structure, will be realized.
  • the two partial shells 1 and 2 are made made of a plastic whose dielectric constant the square root of the electricity constant of the actual lens material, the one below lens core described corresponds. Under this The partial shells 1 and 2 are an ideal requirement Coating layer for the lens.
  • a plastic material for partial lenses 1 and 2 come e.g. Plexiglass, polycarbonate or similar other materials in question. Suitable Marerials are e.g.
  • cyclodefin copolymers also cyclodefin copolymers, Polyolefins, polyphenylene ethers, acrylonitride, styrene, Acrylic ester polymer and modified styrene polymers. If for the partial shells a dielectric constant less than 2 the substances listed above may be required can also be used in foamed form.
  • the partial shells 1 and 2 can be produced using common methods such as e.g. Deep drawing or injection molding with a wall thickness between 2 and 10 mm can be manufactured.
  • the planar partial shell 2 can e.g. can also be an extruded or cast sheet.
  • the two separately manufactured partial shells 1 and 2 are then assembled into a closed shell, by being at the separation point 3 by welding, gluing or with other suitable joining techniques (e.g. Snap connection).
  • the described shell 1, 2 has on the one hand the function of a coating layer for the lens and on the other hand it forms a firmly delimited space which defines the shape of the antenna lens.
  • This space is now filled with a liquid or powdery or pasty material 5, which forms the lens core.
  • the liquid, powdery or pasty material 5 is selected so that it has a dielectric constant required for the lens core.
  • Suitable materials are, for example, polyethylene or polypropylene or a ceramic material such as Al 2 O 3 , TiO 2 or CaZO x .
  • powdery or pasty material 5 in to be able to introduce the cavity of the shell 1, 2 in the shell an opening 4 is provided, which after Introducing the material is closed again.

Landscapes

  • Aerials With Secondary Devices (AREA)
EP98111130A 1997-09-18 1998-06-17 Procédé pour fabriquer une lentille pour une antenne Withdrawn EP0903807A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19741081A DE19741081C1 (de) 1997-09-18 1997-09-18 Verfahren zum Herstellen einer Antennenlinse
DE19741081 1997-09-18

Publications (2)

Publication Number Publication Date
EP0903807A2 true EP0903807A2 (fr) 1999-03-24
EP0903807A3 EP0903807A3 (fr) 2000-07-05

Family

ID=7842757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98111130A Withdrawn EP0903807A3 (fr) 1997-09-18 1998-06-17 Procédé pour fabriquer une lentille pour une antenne

Country Status (3)

Country Link
US (1) US6036893A (fr)
EP (1) EP0903807A3 (fr)
DE (1) DE19741081C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000065691A1 (fr) * 1999-04-23 2000-11-02 Telefonaktiebolaget Lm Ericsson (Publ) Procede et dispositif ayant trait a des lentilles a hyperfrequences
US7301504B2 (en) 2004-07-14 2007-11-27 Ems Technologies, Inc. Mechanical scanning feed assembly for a spherical lens antenna

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000071291A (ja) * 1998-08-27 2000-03-07 Murata Mfg Co Ltd 誘電体レンズの製造方法
DE19963004A1 (de) * 1999-12-24 2001-06-28 Bosch Gmbh Robert Kraftfahrzeug-Radarsystem
JP3664094B2 (ja) * 2000-10-18 2005-06-22 株式会社村田製作所 複合誘電体成形物、その製造方法、およびそれを用いたレンズアンテナ
JP3700617B2 (ja) * 2001-07-04 2005-09-28 株式会社村田製作所 レンズアンテナ
FR2838245A1 (fr) * 2002-04-04 2003-10-10 Thomson Licensing Sa Structure d'antenne compacte
JP3599058B1 (ja) * 2003-07-31 2004-12-08 住友電気工業株式会社 ルーネベルグレンズ及びそれを用いたアンテナ装置
US11283186B2 (en) * 2016-03-25 2022-03-22 Commscope Technologies Llc Antennas having lenses formed of lightweight dielectric materials and related dielectric materials
US11431100B2 (en) 2016-03-25 2022-08-30 Commscope Technologies Llc Antennas having lenses formed of lightweight dielectric materials and related dielectric materials
WO2018017518A2 (fr) 2016-07-21 2018-01-25 Astronics Aerosat Corporation Antenne de communication à multiples canaux
US10992052B2 (en) * 2017-08-28 2021-04-27 Astronics Aerosat Corporation Dielectric lens for antenna system
US11527835B2 (en) 2017-09-15 2022-12-13 Commscope Technologies Llc Methods of preparing a composite dielectric material

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716190A (en) * 1951-02-23 1955-08-23 Dow Chemical Co Dielectric material
US2887684A (en) * 1954-02-01 1959-05-19 Hughes Aircraft Co Dielectric lens for conical scanning
US3255451A (en) * 1963-01-02 1966-06-07 Whittaker Corp Conical scanning rotatable dielectric wedge lens which is dynamically balanced
GB1030063A (en) * 1964-02-26 1966-05-18 North American Aviation Inc Luneberg-type microwave lens
US3321763A (en) * 1965-01-27 1967-05-23 Ikrath Kurt Inflatable microwave antenna with variable parameters
US3866234A (en) * 1973-12-26 1975-02-11 Us Navy Shaped ceramic dielectric antenna lens
US4482513A (en) * 1981-03-10 1984-11-13 General Dynamics, Pomona Division Method of molding foam/aluminum flake microwave lenses
US4458249A (en) * 1982-02-22 1984-07-03 The United States Of America As Represented By The Secretary Of The Navy Multi-beam, multi-lens microwave antenna providing hemispheric coverage
US4769646A (en) * 1984-02-27 1988-09-06 United Technologies Corporation Antenna system and dual-fed lenses producing characteristically different beams
JPS61100420A (ja) * 1984-10-24 1986-05-19 Matsushita Electric Ind Co Ltd プラスチツクレンズの製造方法
CA1262571A (fr) * 1986-12-09 1989-10-31 Yung L. Chow Radome-objectif pour antenne ehf
JPH03179805A (ja) * 1989-12-07 1991-08-05 Murata Mfg Co Ltd 誘電体レンズアンテナ用複合材料
EP0632524B1 (fr) * 1993-06-30 2001-07-25 Murata Manufacturing Co., Ltd. Méthode pour fabrication d'une lentille diélectrique et lentille diélectrique fabriquée selon cette méthode
JPH0722834A (ja) * 1993-06-30 1995-01-24 Murata Mfg Co Ltd アンテナ用誘電体レンズ及びその製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000065691A1 (fr) * 1999-04-23 2000-11-02 Telefonaktiebolaget Lm Ericsson (Publ) Procede et dispositif ayant trait a des lentilles a hyperfrequences
US6424318B1 (en) 1999-04-23 2002-07-23 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangement pertaining to microwave lenses
US7301504B2 (en) 2004-07-14 2007-11-27 Ems Technologies, Inc. Mechanical scanning feed assembly for a spherical lens antenna

Also Published As

Publication number Publication date
DE19741081C1 (de) 1999-03-18
US6036893A (en) 2000-03-14
EP0903807A3 (fr) 2000-07-05

Similar Documents

Publication Publication Date Title
EP1358855B1 (fr) Procédé pour la production d'objets par formage de formes libres lors d'un procédé de frittage au laser
DE2802237C2 (de) Spritzgießform zum Herstellen von aus mindestens zwei verschiedenen Kunststoffmassen bestehenden und mindestens zwei unterschiedliche Bereiche aufweisenden Spritzgußteilen
DE2712437C2 (de) Form aus thermoplastischem Material zur Herstellung von Kontaktlinsen
DE69311850T2 (de) Mehrteiliges Strangpressmundstück
DE2826732C2 (fr)
DE19741081C1 (de) Verfahren zum Herstellen einer Antennenlinse
DE69410743T2 (de) Filterseptum
EP0652819B1 (fr) Procede de fabrication de corps microstructures en plastique
DE69906322T2 (de) Einsatzrohr zum spritzgiessen, verarbeitungsverfahren eines einsatzrohrs und geformter gegenstand
DE1586593A1 (de) Eierschachtel
DE2829250A1 (de) Zusammedrueckbarer behaelter, insbesonere quetschtube
DE1955033A1 (de) Verfahren zur Herstellung von Filterelementen und danach hergestellte Elemente
EP0374441B1 (fr) Procédé pour la fabrication d'un corps microstructurel bidimensionnel en métal à pluralité de trous fins et d'un outil à cet effet
EP0539671B1 (fr) Procédé pour la fabrication d'une préforme poreuse
DE19757836C1 (de) Verfahren zur Herstellung eines doppelt-konvexen Linsenschirmes und Formkern zur Herstellung dieses Linsenschirmes
DE2844487A1 (de) Mit durchgangsloechern versehener koerper aus kunststoff o.dgl. material und verfahren zu seiner herstellung
EP0028284A1 (fr) Echangeur de chaleur en matière plastique
EP0419953A2 (fr) Dispositif pour le moulage par injection en deux couches
DE2425198B2 (de) Verfahren zur Herstellung eines mit Kunststoff beschichteten Behälters
DE10052636B4 (de) Verfahren zur Herstellung eines Ultraschallwandlers
EP0314160B1 (fr) Appareil de coulage pour fabriquer des objets coulés en matière plastique
DE60213363T2 (de) Verfahren zum Herstellen eines Werkzeugs für optische Kunststoffelemente
DE19757827C2 (de) Mehrschichtadapter für eine Extrusionsvorrichtung
EP0513751A1 (fr) Procédé et dispositif pour la fabrication de corps creux en forme de colonnes
DE2823871C2 (de) Verfahren zur Herstellung eines Verbundkörpers, insbesondere einer Akkumulator-Gitterplatte

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7H 01Q 19/06 A, 7H 01Q 15/04 B, 7H 01Q 1/08 B, 7H 01Q 1/28 B

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

17P Request for examination filed

Effective date: 20010313

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MARCONI COMMUNICATIONS GMBH

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20030911