CA2817214A1 - Electromagnetic wave isolator - Google Patents

Electromagnetic wave isolator Download PDF

Info

Publication number
CA2817214A1
CA2817214A1 CA2817214A CA2817214A CA2817214A1 CA 2817214 A1 CA2817214 A1 CA 2817214A1 CA 2817214 A CA2817214 A CA 2817214A CA 2817214 A CA2817214 A CA 2817214A CA 2817214 A1 CA2817214 A1 CA 2817214A1
Authority
CA
Canada
Prior art keywords
section
isolator
microstructured
article
sections
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
CA2817214A
Other languages
English (en)
French (fr)
Inventor
Walter R. Romanko
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 Innovative Properties Co
Original Assignee
3M Innovative Properties 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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of CA2817214A1 publication Critical patent/CA2817214A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/32—Non-reciprocal transmission devices
    • H01P1/36—Isolators
    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Laminated Bodies (AREA)
  • Details Of Aerials (AREA)
  • Waveguide Connection Structure (AREA)
  • Aerials With Secondary Devices (AREA)
  • Soft Magnetic Materials (AREA)
CA2817214A 2010-11-18 2011-11-04 Electromagnetic wave isolator Abandoned CA2817214A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US41509010P 2010-11-18 2010-11-18
US61/415,090 2010-11-18
PCT/US2011/059300 WO2012067846A1 (en) 2010-11-18 2011-11-04 Electromagnetic wave isolator

Publications (1)

Publication Number Publication Date
CA2817214A1 true CA2817214A1 (en) 2012-05-24

Family

ID=44947262

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2817214A Abandoned CA2817214A1 (en) 2010-11-18 2011-11-04 Electromagnetic wave isolator

Country Status (12)

Country Link
US (1) US20120126911A1 (enExample)
EP (1) EP2641295A1 (enExample)
JP (2) JP2014504062A (enExample)
KR (1) KR20130130738A (enExample)
CN (1) CN103201901B (enExample)
BR (1) BR112013011388A2 (enExample)
CA (1) CA2817214A1 (enExample)
MX (1) MX2013005386A (enExample)
RU (1) RU2013121424A (enExample)
SG (1) SG190184A1 (enExample)
TW (1) TWI556719B (enExample)
WO (1) WO2012067846A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109096487A (zh) * 2017-06-20 2018-12-28 赵云飞 钛酸钡/聚苯胺复合材料的制备方法及其应用

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* Cited by examiner, † Cited by third party
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US9785807B2 (en) 2006-11-18 2017-10-10 Rfmicron, Inc. Method and apparatus for sensing environment using a wireless passive sensor
US11817637B2 (en) 2006-11-18 2023-11-14 Rfmicron, Inc. Radio frequency identification (RFID) moisture tag(s) and sensors with extended sensing via capillaries
US20130330511A1 (en) * 2012-06-08 2013-12-12 Fred Sharifi Gigahertz electromagnetic absorption in a material with textured surface
JP5479540B2 (ja) * 2012-07-10 2014-04-23 株式会社リケン 電波吸収体
WO2015184460A2 (en) 2014-05-30 2015-12-03 Rfmicron Method and apparatus for sensing environmental parameters using wireless sensor(s)
US10037509B1 (en) 2014-06-17 2018-07-31 Amazon Technologies, Inc. Efficient monitoring of inventory items
US10176449B1 (en) 2014-08-08 2019-01-08 Amazon Technologies, Inc. Timeout durations for radio frequency identification tags
WO2016060938A2 (en) 2014-10-08 2016-04-21 RF Micron, Inc. Radio frequency identification (rfid) moisture tag(s) and sensors with extended sensing via capillaries
US10734725B2 (en) 2015-12-08 2020-08-04 3M Innovative Properties Company Magnetic isolator, method of making the same, and device containing the same
JP2019504482A (ja) 2015-12-08 2019-02-14 スリーエム イノベイティブ プロパティズ カンパニー 磁気遮断材、その製造方法及びそれを含むデバイス
CN110230096A (zh) * 2019-06-26 2019-09-13 中国科学院上海光学精密机械研究所 三硼酸锂晶体表面增透微结构及其制备方法
CN115911820A (zh) * 2021-09-22 2023-04-04 安弗施无线射频系统（上海）有限公司 天线和基站
CN114220646B (zh) * 2021-12-16 2024-01-02 上海无线电设备研究所 一种基于微颗粒的电磁特征主动调控的标准样件的构造方法
TWI825652B (zh) * 2022-04-01 2023-12-11 肥特補科技股份有限公司 隔離片與其製造方法及ｕｈｆ ｒｆｉｄ標籤
GB2630578A (en) * 2023-05-30 2024-12-04 Trak Microwave Ltd RF circulator with non-conductive preform

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
JPS5888408U (ja) * 1981-12-10 1983-06-15 東北金属工業株式会社 電波吸収壁
FR2620853B1 (fr) * 1987-09-18 1989-12-01 Commissariat Energie Atomique Materiau magnetique composite et son procede de fabrication
US5275880A (en) * 1989-05-17 1994-01-04 Minnesota Mining And Manufacturing Company Microwave absorber for direct surface application
JP2002009483A (ja) * 2000-06-26 2002-01-11 Kitagawa Ind Co Ltd 電波吸収体
EP1342287A4 (en) * 2000-12-14 2004-09-01 Xellant Inc VIRTUAL MAGNETIC WALL ANTENNA
JP2004335999A (ja) * 2003-04-17 2004-11-25 Miyagawa Kasei Ind Co Ltd 電磁波吸収複合体およびその製造方法
CN1810068A (zh) * 2003-06-19 2006-07-26 波零公司 印刷电路板的emi吸收屏蔽
EP1689030A4 (en) * 2003-11-14 2008-01-02 Hitachi Ltd RADAR ON VEHICLES
US7064668B2 (en) * 2004-10-25 2006-06-20 The Boeing Company Reducing electromagnetic interference in radio frequency identification applications
ES2274674B1 (es) * 2004-12-24 2008-04-16 Micromag 2000, S.L. Absorbedor de radiacion electromagnetica basado en microhilos magneticos.
DE102006032833B4 (de) * 2005-08-26 2016-11-03 Honda Motor Co., Ltd. Transponder-Auswertungssystem und Verfahren
JP2007294808A (ja) * 2006-04-27 2007-11-08 Nitto Denko Corp 電磁波を伝導又は吸収する特性を有する構造体
US20080153963A1 (en) 2006-12-22 2008-06-26 3M Innovative Properties Company Method for making a dispersion
US8013775B2 (en) * 2007-04-30 2011-09-06 Viasat, Inc. Radio frequency absorber
US7830296B2 (en) * 2007-07-11 2010-11-09 Finisar Corporation Anechoic structures for absorbing electromagnetic interference in a communications module
KR100955948B1 (ko) * 2007-12-21 2010-05-03 삼성전기주식회사 다중대역 송신단 모듈 및 이의 제조 방법
CN101672987B (zh) * 2008-09-12 2013-01-02 华为技术有限公司 光隔离器、光分插复用器和光合束器
JP5698982B2 (ja) * 2008-09-30 2015-04-08 凸版印刷株式会社 照明ランプ及びナノ炭素材料複合基板とその製造方法
JP5150476B2 (ja) * 2008-12-22 2013-02-20 株式会社東芝 アンテナ装置及び無線装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109096487A (zh) * 2017-06-20 2018-12-28 赵云飞 钛酸钡/聚苯胺复合材料的制备方法及其应用

Also Published As

Publication number Publication date
JP2014504062A (ja) 2014-02-13
TWI556719B (zh) 2016-11-01
CN103201901B (zh) 2015-11-25
TW201225833A (en) 2012-06-16
BR112013011388A2 (pt) 2019-09-24
WO2012067846A1 (en) 2012-05-24
KR20130130738A (ko) 2013-12-02
RU2013121424A (ru) 2014-12-27
US20120126911A1 (en) 2012-05-24
JP2017200232A (ja) 2017-11-02
EP2641295A1 (en) 2013-09-25
MX2013005386A (es) 2013-07-29
SG190184A1 (en) 2013-06-28
CN103201901A (zh) 2013-07-10

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Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20161028

FZDE Discontinued

Effective date: 20181106