AU2001252840A1 - Radiation absorber - Google Patents

Radiation absorber

Info

Publication number
AU2001252840A1
AU2001252840A1 AU2001252840A AU5284001A AU2001252840A1 AU 2001252840 A1 AU2001252840 A1 AU 2001252840A1 AU 2001252840 A AU2001252840 A AU 2001252840A AU 5284001 A AU5284001 A AU 5284001A AU 2001252840 A1 AU2001252840 A1 AU 2001252840A1
Authority
AU
Australia
Prior art keywords
dielectric
radiation absorber
layers
omega
square
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.)
Abandoned
Application number
AU2001252840A
Inventor
Nils Gustafsson
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.)
TotalFoersvarets Forskningsinstitut FOI
Original Assignee
TotalFoersvarets Forskningsinstitut FOI
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20279474&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU2001252840(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by TotalFoersvarets Forskningsinstitut FOI filed Critical TotalFoersvarets Forskningsinstitut FOI
Publication of AU2001252840A1 publication Critical patent/AU2001252840A1/en
Abandoned 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
    • H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial
    • 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
    • H01Q17/007—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with means for controlling the absorption
    • 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
    • H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31931—Polyene monomer-containing

Abstract

A radiation absorber which is placed on the irradiated side of a conductive surface (L) whose surface resistance <0.1 Omega/square. The radiation absorber comprises three layers, which from said conductive surface outwards consist of a first dielectric (B1), a resistive layer (C1) and a second dielectric (B2). The surface resistance of the resistive layer is 225 Omega/square±25% and the thickness of the layer without a possible carrier <0.2 mm. The dielectric constant epsilon=2±25% for the two dielectric layers and their thicknesses are of the same order of magnitude. The total thickness dA of the absorber, with all the layers included, is selected according to the formulain order to give an absorption peak at a desired wavelength lambda expressed in meters.
AU2001252840A 2000-04-28 2001-04-27 Radiation absorber Abandoned AU2001252840A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0001565A SE522035C2 (en) 2000-04-28 2000-04-28 radiation absorber
SE0001565 2000-04-28
PCT/SE2001/000926 WO2001084672A1 (en) 2000-04-28 2001-04-27 Radiation absorber

Publications (1)

Publication Number Publication Date
AU2001252840A1 true AU2001252840A1 (en) 2001-11-12

Family

ID=20279474

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001252840A Abandoned AU2001252840A1 (en) 2000-04-28 2001-04-27 Radiation absorber

Country Status (7)

Country Link
US (1) US6700525B2 (en)
EP (1) EP1295361B1 (en)
AT (1) ATE331315T1 (en)
AU (1) AU2001252840A1 (en)
DE (1) DE60120972D1 (en)
SE (1) SE522035C2 (en)
WO (1) WO2001084672A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040021597A1 (en) * 2002-05-07 2004-02-05 Dvorak George J. Optimization of electromagnetic absorption in laminated composite plates
US6685143B1 (en) * 2003-01-03 2004-02-03 Orbital Research Inc. Aircraft and missile forebody flow control device and method of controlling flow
GB2404087A (en) * 2003-07-18 2005-01-19 Qinetiq Ltd Electromagnetic radiation absorber
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
KR20090011003A (en) * 2006-05-02 2009-01-30 샌트랄 글래스 컴퍼니 리미티드 Electromagnetic wave absorption board to be used in wireless lan
JP2010080911A (en) * 2008-04-30 2010-04-08 Tayca Corp Wide band electromagnetic wave absorbing material and method of manufacturing same
US20150042502A1 (en) * 2012-03-30 2015-02-12 Micromag 2000, S.L. Electromagnetic radiation attenuator
WO2016073536A1 (en) * 2014-11-04 2016-05-12 Flir Surveillance, Inc. Multiband wavelength selective device
CN107251320A (en) 2014-11-04 2017-10-13 菲力尔监测有限公司 Multiband wavelength selectivity structure

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012738A (en) * 1961-01-31 1977-03-15 The United States Of America As Represented By The Secretary Of The Navy Combined layers in a microwave radiation absorber
US3680107A (en) * 1967-04-11 1972-07-25 Hans H Meinke Wide band interference absorber and technique for electromagnetic radiation
US4038660A (en) * 1975-08-05 1977-07-26 The United States Of America As Represented By The Secretary Of The Army Microwave absorbers
DE3534059C1 (en) 1985-09-25 1990-05-17 Dornier Gmbh Fibre composite material
US5576710A (en) 1986-11-25 1996-11-19 Chomerics, Inc. Electromagnetic energy absorber
US5325094A (en) 1986-11-25 1994-06-28 Chomerics, Inc. Electromagnetic energy absorbing structure
SE463389B (en) 1989-03-30 1990-11-12 Aake Bergquist A coating for metal surfaces which is selectively reflective for microwave radiation
KR930011548B1 (en) * 1991-08-13 1993-12-10 한국과학기술연구원 Electric wave absorber
JP3319147B2 (en) 1994-04-15 2002-08-26 ティーディーケイ株式会社 Radio wave absorber

Also Published As

Publication number Publication date
SE522035C2 (en) 2004-01-07
US20030148133A1 (en) 2003-08-07
ATE331315T1 (en) 2006-07-15
WO2001084672A1 (en) 2001-11-08
EP1295361B1 (en) 2006-06-21
US6700525B2 (en) 2004-03-02
DE60120972D1 (en) 2006-08-03
EP1295361A1 (en) 2003-03-26
SE0001565D0 (en) 2000-04-28
SE0001565L (en) 2001-10-29

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