GB1375906A - Radomes - Google Patents
RadomesInfo
- Publication number
- GB1375906A GB1375906A GB1106672A GB1106672A GB1375906A GB 1375906 A GB1375906 A GB 1375906A GB 1106672 A GB1106672 A GB 1106672A GB 1106672 A GB1106672 A GB 1106672A GB 1375906 A GB1375906 A GB 1375906A
- Authority
- GB
- United Kingdom
- Prior art keywords
- inner layer
- strips
- dielectric constant
- outer layers
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
Landscapes
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
1375906 Radomes SUMITOMO ELECTRIC INDUSTRIES Ltd 9 March 1972 [11 March 1971] 11066/72 Heading H4A A sandwich type radome has three layers, the equivalent dielectric constant of the outer layers being equal to the square root of the dielectric constant of the inner layer, in order to reduce transmission losses. The core is made of a substantially non-magnetic dielectric material and the thickness of each outer layer is an odd number multiple of #/4 (#= wavelength in the layer at the operating frequency). As shown, the outer layers are in the form of strips 2 of dielectric material arranged upon the surfaces of the inner layer 1, and parallel to the electric field vector. The width W of the strips and their pitch P are chosen so that the required equivalent dielectric constant is obtained. The material of which the strips are made may be the same or different from that of the inner layer, and they may be attached thereto by means of an adhesive; alternatively, they may be formed from a sufficiently thick plate by machining or moulding (Figs. 6(a-c), not shown). The thickness of the inner layer may be an odd number multiple of a quarter of the wavelength therein at the operating frequency. A latticelike or regularly spaced embossed configuration may be adopted for the outer layers in cases where the electric field vector has components in two perpendicular directions.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46013622A JPS5148435B2 (en) | 1971-03-11 | 1971-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1375906A true GB1375906A (en) | 1974-12-04 |
Family
ID=11838316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1106672A Expired GB1375906A (en) | 1971-03-11 | 1972-03-09 | Radomes |
Country Status (5)
Country | Link |
---|---|
US (1) | US3780374A (en) |
JP (1) | JPS5148435B2 (en) |
DE (1) | DE2211438C3 (en) |
GB (1) | GB1375906A (en) |
IT (1) | IT953492B (en) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS512356B2 (en) * | 1972-04-25 | 1976-01-24 | ||
US4179699A (en) * | 1977-07-05 | 1979-12-18 | The Boeing Company | Low reflectivity radome |
US4148039A (en) * | 1977-07-05 | 1979-04-03 | The Boeing Company | Low reflectivity radome |
JPS54119492U (en) * | 1978-02-08 | 1979-08-21 | ||
US4189731A (en) * | 1978-06-12 | 1980-02-19 | General Dynamics Electronics Division | Radome with tilted dielectric strips |
US4358772A (en) * | 1980-04-30 | 1982-11-09 | Hughes Aircraft Company | Ceramic broadband radome |
US4506269A (en) * | 1982-05-26 | 1985-03-19 | The United States Of America As Represented By The Secretary Of The Air Force | Laminated thermoplastic radome |
US4688009A (en) * | 1985-05-13 | 1987-08-18 | Varian Associates, Inc. | Triple-pane waveguide window |
GB8620260D0 (en) * | 1986-08-20 | 1986-10-01 | Indep Broadcasting Authority | Reduction of microwave transmission loss |
US4725475A (en) * | 1986-08-25 | 1988-02-16 | General Dynamics Electronics Division | Multi-octave thick dielectric radome wall |
FR2731846B1 (en) * | 1987-04-14 | 1997-07-25 | Thomson Csf | WALL FOR RADOMES AND RADOMES THUS OBTAINED |
US4901086A (en) * | 1987-10-02 | 1990-02-13 | Raytheon Company | Lens/polarizer radome |
GB8821741D0 (en) * | 1988-09-14 | 1989-09-13 | British Aerospace | Radomes |
GB2378820A (en) | 2001-08-17 | 2003-02-19 | Anafa Electromagnetic Solution | Electromagnetic filter |
US6975279B2 (en) * | 2003-05-30 | 2005-12-13 | Harris Foundation | Efficient radome structures of variable geometry |
US7817099B2 (en) * | 2005-12-08 | 2010-10-19 | Raytheon Company | Broadband ballistic resistant radome |
US8599095B2 (en) | 2005-12-08 | 2013-12-03 | Raytheon Company | Broadband ballistic resistant radome |
JP5275237B2 (en) * | 2006-09-29 | 2013-08-28 | レイセオン カンパニー | Molded ballistic radome |
JP4919423B2 (en) * | 2007-07-06 | 2012-04-18 | 日本無線株式会社 | Antenna feeder |
US8054239B2 (en) * | 2008-10-24 | 2011-11-08 | Raytheon Company | Honeycomb-backed armored radome |
DE102009026433A1 (en) | 2009-05-25 | 2010-12-09 | Endress + Hauser Gmbh + Co. Kg | Arrangement for level measurement with a microwave level gauge |
US8605001B2 (en) | 2009-09-17 | 2013-12-10 | Mitsubishi Electric Corporation | Radome equipment |
JP6171204B2 (en) | 2010-12-14 | 2017-08-02 | ディーエスエム アイピー アセッツ ビー.ブイ. | Radome material and manufacturing method thereof |
US20140327595A1 (en) | 2011-09-12 | 2014-11-06 | Dsm Ip Assets B.V.. | Composite radome wall |
DE102012003948B4 (en) * | 2012-03-01 | 2014-04-17 | Krohne Messtechnik Gmbh | According to the radar principle working level measuring system |
US9099782B2 (en) | 2012-05-29 | 2015-08-04 | Cpi Radant Technologies Division Inc. | Lightweight, multiband, high angle sandwich radome structure for millimeter wave frequencies |
US9236652B2 (en) | 2012-08-21 | 2016-01-12 | Raytheon Company | Broadband array antenna enhancement with spatially engineered dielectrics |
DE102014213502A1 (en) * | 2014-07-11 | 2016-01-14 | Bayerische Motoren Werke Aktiengesellschaft | Protective element for a radar sensor in a motor vehicle |
KR101705973B1 (en) * | 2015-04-22 | 2017-02-13 | 연세대학교 산학협력단 | Electromagnetic wave shileding dielectric film |
US9876279B2 (en) | 2015-10-30 | 2018-01-23 | Raytheon Company | Monolithic wideband millimeter-wave radome |
JP2017129418A (en) | 2016-01-19 | 2017-07-27 | 日本電産エレシス株式会社 | vehicle |
JP2017129419A (en) | 2016-01-19 | 2017-07-27 | 日本電産エレシス株式会社 | vehicle |
JP2017161431A (en) | 2016-03-11 | 2017-09-14 | 日本電産エレシス株式会社 | vehicle |
CN107039763A (en) * | 2016-11-30 | 2017-08-11 | 中国铁塔股份有限公司长春市分公司 | A kind of double-T antenna house |
JP2019158592A (en) * | 2018-03-13 | 2019-09-19 | パナソニックIpマネジメント株式会社 | Antenna device |
US11749900B2 (en) | 2018-04-06 | 2023-09-05 | 3M Innovative Properties Company | Radar standing wave dampening components and systems |
WO2019198448A1 (en) * | 2018-04-12 | 2019-10-17 | Alps Alpine Co., Ltd. | Radome design for improving radar system performance for semi- and full-autonomous driving applications |
JP7338567B2 (en) * | 2020-06-30 | 2023-09-05 | 豊田合成株式会社 | Electromagnetic transmission cover |
WO2023013753A1 (en) * | 2021-08-05 | 2023-02-09 | 日東電工株式会社 | Electromagnetic wave shield |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2956281A (en) * | 1954-09-08 | 1960-10-11 | Edward B Mcmillan | Dielectric walls for transmission of electromagnetic radiation |
GB851923A (en) * | 1958-03-18 | 1960-10-19 | Gen Electric Co Ltd | Improvements in or relating to radomes |
FR1357823A (en) * | 1963-03-01 | 1964-04-10 | Csf | Envelopes for microwave receivers and transmitters |
US3633206A (en) * | 1967-01-30 | 1972-01-04 | Edward Bellamy Mcmillan | Lattice aperture antenna |
US3698001A (en) * | 1969-11-11 | 1972-10-10 | Nippon Telegraph & Telephone | Frequency group separation filter device using laminated dielectric slab-shaped elements |
-
1971
- 1971-03-11 JP JP46013622A patent/JPS5148435B2/ja not_active Expired
-
1972
- 1972-03-08 US US00232897A patent/US3780374A/en not_active Expired - Lifetime
- 1972-03-09 DE DE2211438A patent/DE2211438C3/en not_active Expired
- 1972-03-09 GB GB1106672A patent/GB1375906A/en not_active Expired
- 1972-03-11 IT IT21735/72A patent/IT953492B/en active
Also Published As
Publication number | Publication date |
---|---|
DE2211438C3 (en) | 1979-05-17 |
IT953492B (en) | 1973-08-10 |
US3780374A (en) | 1973-12-18 |
JPS4724254A (en) | 1972-10-16 |
JPS5148435B2 (en) | 1976-12-21 |
DE2211438A1 (en) | 1972-09-21 |
DE2211438B2 (en) | 1978-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |