EP0903807A2 - Verfahren zum Herstellen einer Antennenlinse - Google Patents
Verfahren zum Herstellen einer Antennenlinse Download PDFInfo
- 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
- partial shells
- 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- Withdrawn
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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
- H01Q15/02—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.
Abstract
Description
Claims (9)
- Verfahren zum Herstellen einer Antennenlinse, bestehend aus einem Linsenkern (5) und einer diesen umgebenden Vergütungsschicht (1, 2), dadurch gekennzeichnet, daß eine die Vergütungsschicht bildende, die Form der Linse vorgebende steife Schale (1, 2) hergestellt wird und daß der Hohlraum der Schale (1, 2) mit einem den Linsenkern bildenden flüssigen, pulverförmigen oder pastösen Material (5) ausgefüllt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Schale aus zwei separat hergestellten Teilschalen (1, 2) zusammengesetzt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schale (1, 2) aus einem Kunststoff hergestellt wird.
- Verfahren nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß die Teilschalen (1, 2) im Tiefziehverfahren hergestellt werden.
- Verfahren nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß die Teilschalen (1, 2) durch Spritzguß hergestellt werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das flüssige, pulverförmige oder pastöse Material (5) durch eine Öffnung (4) in der Schale (1) eingebracht wird und daß die Öffnung (4) anschließend verschlossen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Linsenkern aus einem keramischen Material (5) gebildet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Material (5) für den Linsenkern Kunststoff verwendet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Material (5) für den Linsenkern ein mit Keramik gefüllter Kunststoff verwendet wird.
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 (de) | 1999-03-24 |
EP0903807A3 EP0903807A3 (de) | 2000-07-05 |
Family
ID=7842757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98111130A Withdrawn EP0903807A3 (de) | 1997-09-18 | 1998-06-17 | Verfahren zum Herstellen einer Antennenlinse |
Country Status (3)
Country | Link |
---|---|
US (1) | US6036893A (de) |
EP (1) | EP0903807A3 (de) |
DE (1) | DE19741081C1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000065691A1 (en) * | 1999-04-23 | 2000-11-02 | Telefonaktiebolaget Lm Ericsson (Publ) | A 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 |
Families Citing this family (11)
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 |
US11431100B2 (en) | 2016-03-25 | 2022-08-30 | Commscope Technologies Llc | Antennas having lenses formed of lightweight dielectric materials and related dielectric materials |
WO2017165342A1 (en) * | 2016-03-25 | 2017-09-28 | Commscope Technologies Llc | Antennas having lenses formed of lightweight dielectric materials and related dielectric materials |
WO2018017518A2 (en) | 2016-07-21 | 2018-01-25 | Astronics Aerosat Corporation | Multi-channel communications antenna |
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 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1030063A (en) * | 1964-02-26 | 1966-05-18 | North American Aviation Inc | Luneberg-type microwave lens |
US4482513A (en) * | 1981-03-10 | 1984-11-13 | General Dynamics, Pomona Division | Method of molding foam/aluminum flake microwave lenses |
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 |
US5154973A (en) * | 1989-12-07 | 1992-10-13 | Murata Manufacturing Co., Ltd. | Composite material for dielectric lens antennas |
EP0632522A1 (de) * | 1993-06-30 | 1995-01-04 | Murata Manufacturing Co., Ltd. | Dielektrische Linse für eine Antenne und ein zugehöriges Herstellungsverfahren |
Family Cites Families (9)
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 |
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 |
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 |
CA1262571A (en) * | 1986-12-09 | 1989-10-31 | Yung L. Chow | Radome-lens ehf antenna development |
DE69427789T2 (de) * | 1993-06-30 | 2002-04-18 | Murata Manufacturing Co | Verfahren zur Herstellung einer dielektrischen Linse für eine Antenne und dielektrische Linse nach diesem Verfahren |
-
1997
- 1997-09-18 DE DE19741081A patent/DE19741081C1/de not_active Expired - Fee Related
-
1998
- 1998-06-17 EP EP98111130A patent/EP0903807A3/de not_active Withdrawn
- 1998-07-21 US US09/119,852 patent/US6036893A/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1030063A (en) * | 1964-02-26 | 1966-05-18 | North American Aviation Inc | Luneberg-type microwave lens |
US4482513A (en) * | 1981-03-10 | 1984-11-13 | General Dynamics, Pomona Division | Method of molding foam/aluminum flake microwave lenses |
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 |
US5154973A (en) * | 1989-12-07 | 1992-10-13 | Murata Manufacturing Co., Ltd. | Composite material for dielectric lens antennas |
EP0632522A1 (de) * | 1993-06-30 | 1995-01-04 | Murata Manufacturing Co., Ltd. | Dielektrische Linse für eine Antenne und ein zugehöriges Herstellungsverfahren |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 010, no. 281 (M-520), 25. September 1986 (1986-09-25) -& JP 61 100420 A (MATSUSHITA ELECTRIC IND CO LTD), 19. Mai 1986 (1986-05-19) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000065691A1 (en) * | 1999-04-23 | 2000-11-02 | Telefonaktiebolaget Lm Ericsson (Publ) | A method and arrangement pertaining to microwave lenses |
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 |
EP0903807A3 (de) | 2000-07-05 |
US6036893A (en) | 2000-03-14 |
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