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DE69025424D1 - Mikrowellendämpfer zur direkten Oberflächenbelegung - Google Patents

Mikrowellendämpfer zur direkten Oberflächenbelegung

Info

Publication number
DE69025424D1
DE69025424D1 DE69025424T DE69025424T DE69025424D1 DE 69025424 D1 DE69025424 D1 DE 69025424D1 DE 69025424 T DE69025424 T DE 69025424T DE 69025424 T DE69025424 T DE 69025424T DE 69025424 D1 DE69025424 D1 DE 69025424D1
Authority
DE
Germany
Prior art keywords
surface coverage
direct surface
damper
microwave
microwave damper
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 - Fee Related
Application number
DE69025424T
Other languages
English (en)
Other versions
DE69025424T2 (de
Inventor
Charles E Boyer
Richard J Kuo
Stephen M Logiudice
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of DE69025424D1 publication Critical patent/DE69025424D1/de
Application granted granted Critical
Publication of DE69025424T2 publication Critical patent/DE69025424T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/004—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using non-directional dissipative particles, e.g. ferrite powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/025—Electric or magnetic properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/208—Magnetic, paramagnetic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/268—Monolayer with structurally defined element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Laminated Bodies (AREA)
DE69025424T 1989-05-17 1990-05-16 Mikrowellendämpfer zur direkten Oberflächenbelegung Expired - Fee Related DE69025424T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/353,010 US5275880A (en) 1989-05-17 1989-05-17 Microwave absorber for direct surface application

Publications (2)

Publication Number Publication Date
DE69025424D1 true DE69025424D1 (de) 1996-03-28
DE69025424T2 DE69025424T2 (de) 1996-09-26

Family

ID=23387370

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69025424T Expired - Fee Related DE69025424T2 (de) 1989-05-17 1990-05-16 Mikrowellendämpfer zur direkten Oberflächenbelegung

Country Status (5)

Country Link
US (1) US5275880A (de)
EP (1) EP0398672B1 (de)
JP (1) JPH0319299A (de)
KR (1) KR900019287A (de)
DE (1) DE69025424T2 (de)

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US5539148A (en) * 1992-09-11 1996-07-23 Uniden Corporation Electronic apparatus case having an electro-magnetic wave shielding structure
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FI117224B (fi) * 1994-01-20 2006-07-31 Nec Tokin Corp Sähkömagneettinen häiriönpoistokappale, ja sitä soveltavat elektroninen laite ja hybridimikropiirielementti
US5833860A (en) * 1995-08-28 1998-11-10 Millipore Investment Holdings Limited Centrifugal adsorptive sample preparation device and method
EP0883880A2 (de) * 1996-02-29 1998-12-16 Minnesota Mining And Manufacturing Company Thermoplastisch-elastomeres basismaterial mit abstimmbaren dielektrischen eigenschaften und laminate daraus
JPH1083911A (ja) * 1996-09-06 1998-03-31 Tokin Corp 複合磁性体及びそれを用いた電磁干渉抑制体
EP0866649B1 (de) * 1996-09-09 2004-01-14 NEC TOKIN Corporation Hoch warmeleitendes magnetisches mischmaterial
DE29703725U1 (de) * 1997-03-01 1997-04-24 EMC Testhaus Schwerte GmbH, 58239 Schwerte Flächenelement zur Einschränkung von HF-Reflexionen
JP3243789B2 (ja) * 1997-03-31 2002-01-07 日本板硝子株式会社 電波吸収性パネル
EP1034214B1 (de) * 1997-11-03 2004-06-16 Helmut Kahl Kunststoffmaterial und leitfähiger kunststoffgegenstand
US6225939B1 (en) 1999-01-22 2001-05-01 Mcdonnell Douglas Corporation Impedance sheet device
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US20040021597A1 (en) * 2002-05-07 2004-02-05 Dvorak George J. Optimization of electromagnetic absorption in laminated composite plates
US8138673B1 (en) 2002-05-21 2012-03-20 Imaging Systems Technology Radiation shielding
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JP2004077399A (ja) * 2002-08-22 2004-03-11 Hitachi Ltd ミリ波レーダ
US6686866B1 (en) * 2002-09-26 2004-02-03 The United States Of America As Represented By The Secretary Of The Navy Two-piece radar-absorbing end cap assembly
US20040104835A1 (en) * 2002-10-09 2004-06-03 Takeyuki Ojima Microwave absorbent devices and materials
US6803883B2 (en) * 2003-02-13 2004-10-12 Spectrasite Communications, Inc. Radio frequency electromagnetic emissions shield
JP2004312696A (ja) * 2003-03-24 2004-11-04 Hitachi Ltd ミリ波レーダおよびその製造方法
US20070241962A1 (en) * 2003-11-14 2007-10-18 Hiroshi Shinoda Automotive Radar
EP1587353A1 (de) * 2004-04-16 2005-10-19 Hou, PonWei Abschirmungsmaterial zur Verhinderung von elektromagnetischen Wellenlecks
US20060007034A1 (en) * 2004-07-07 2006-01-12 Wen-Jang Yen Composite radar absorption structure with a thin shell type and method for manufacturing the same
EP1983608B1 (de) * 2007-04-20 2013-02-27 Saab AB Luftfahrzeugintegrierte Antenne
US8013775B2 (en) * 2007-04-30 2011-09-06 Viasat, Inc. Radio frequency absorber
CN101730464A (zh) * 2007-05-16 2010-06-09 彻斯公司 电磁屏蔽材料
JP5304489B2 (ja) * 2009-07-01 2013-10-02 富士通株式会社 電波吸収体
SG190184A1 (en) * 2010-11-18 2013-06-28 3M Innovative Properties Co Electromagnetic wave isolator
EP2833478A1 (de) * 2012-03-30 2015-02-04 Micromag 2000, S.L. Dämpfer für elektromagnetische strahlung
US20140197352A1 (en) * 2013-01-11 2014-07-17 Sabic Innovative Plastics Ip B.V. Methods and compositions for energy dissipation
RU2578769C2 (ru) * 2014-02-14 2016-03-27 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Устройство из полимерных композитных материалов для снижения радиолокационной заметности объектов различного назначения
US20160052240A1 (en) 2014-08-25 2016-02-25 Chase Corporation Paper/ plastic laminate and electromagnetic shielding material
US10510433B2 (en) 2014-08-28 2019-12-17 Shield Your Body Llc Electromagnetic radiation shielding tile having electromagnetic shielding fabric and metal portions
TR201503470A2 (tr) * 2015-03-23 2015-04-21 Aselsan Elektronik Sanayi Ve Ticaret As Bi̇r elastomeri̇k radar soğurucu malzeme ve üreti̇m yöntemi̇
EP3537860B1 (de) * 2016-11-04 2022-10-26 Maxell, Ltd. Elektromagnetische wellenabsorptionsschicht
EP3537861B1 (de) 2016-11-04 2022-03-30 Maxell, Ltd. Folie zum absorbieren elektromagnetischer wellen
JP7257098B2 (ja) * 2017-06-14 2023-04-13 日東電工株式会社 電磁波吸収体
CN108323143B (zh) * 2018-03-14 2020-05-05 广州方邦电子股份有限公司 电磁屏蔽膜、线路板及电磁屏蔽膜的制备方法
JP2020150221A (ja) * 2019-03-15 2020-09-17 日東電工株式会社 電波吸収体及び電波吸収体用キット
CN110137691B (zh) * 2019-06-11 2020-10-09 电子科技大学 基于周期性磁性材料的超宽带吸波器
TWI892376B (zh) * 2022-12-23 2025-08-01 財團法人工業技術研究院 電磁波吸收體

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Also Published As

Publication number Publication date
KR900019287A (ko) 1990-12-24
DE69025424T2 (de) 1996-09-26
EP0398672A1 (de) 1990-11-22
JPH0319299A (ja) 1991-01-28
US5275880A (en) 1994-01-04
EP0398672B1 (de) 1996-02-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee