GB1375906A - Radomes - Google Patents



Publication number
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
United Kingdom
Prior art keywords
inner layer
dielectric constant
outer layers
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.)
Application number
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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
Priority to JP46013622A priority Critical patent/JPS5148435B1/ja
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of GB1375906A publication Critical patent/GB1375906A/en
Expired legal-status Critical Current



    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/42Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H01Q1/422Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material


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.
GB1106672A 1971-03-11 1972-03-09 Radomes Expired GB1375906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP46013622A JPS5148435B1 (en) 1971-03-11 1971-03-11

Publications (1)

Publication Number Publication Date
GB1375906A true GB1375906A (en) 1974-12-04



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) JPS5148435B1 (en)
DE (1) DE2211438C3 (en)
GB (1) GB1375906A (en)
IT (1) IT953492B (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
CN101517826B (en) * 2006-09-29 2013-02-20 雷斯昂公司 Shaped ballistic radome
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
WO2011033935A1 (en) * 2009-09-17 2011-03-24 三菱電機株式会社 Radome equipment
ES2790654T3 (en) 2010-12-14 2020-10-28 Dsm Ip Assets Bv Radome material and procedure to make it
KR20140060520A (en) 2011-09-12 2014-05-20 디에스엠 아이피 어셋츠 비.브이. 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
EP3776728A1 (en) * 2018-04-06 2021-02-17 3M Innovative Properties Company Radar standing wave dampnening 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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
JPS5148435B1 (en) 1976-12-21
DE2211438B2 (en) 1978-09-21
US3780374A (en) 1973-12-18
IT953492B (en) 1973-08-10
DE2211438C3 (en) 1979-05-17
DE2211438A1 (en) 1972-09-21

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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