TWI372597B - Radio wave absorber - Google Patents

Radio wave absorber

Info

Publication number
TWI372597B
TWI372597B TW094129430A TW94129430A TWI372597B TW I372597 B TWI372597 B TW I372597B TW 094129430 A TW094129430 A TW 094129430A TW 94129430 A TW94129430 A TW 94129430A TW I372597 B TWI372597 B TW I372597B
Authority
TW
Taiwan
Prior art keywords
radio wave
wave absorber
absorber
radio
wave
Prior art date
Application number
TW094129430A
Other languages
English (en)
Other versions
TW200624035A (en
Original Assignee
Mitsubishi Gas Chemical 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 Mitsubishi Gas Chemical Co filed Critical Mitsubishi Gas Chemical Co
Publication of TW200624035A publication Critical patent/TW200624035A/zh
Application granted granted Critical
Publication of TWI372597B publication Critical patent/TWI372597B/zh

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
    • H01Q15/0026—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective said selective devices having a stacked geometry or having multiple layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • 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
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Aerials With Secondary Devices (AREA)
  • Laminated Bodies (AREA)
TW094129430A 2004-09-06 2005-08-29 Radio wave absorber TWI372597B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004258182A JP4461970B2 (ja) 2004-09-06 2004-09-06 電波吸収体

Publications (2)

Publication Number Publication Date
TW200624035A TW200624035A (en) 2006-07-01
TWI372597B true TWI372597B (en) 2012-09-11

Family

ID=36036263

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094129430A TWI372597B (en) 2004-09-06 2005-08-29 Radio wave absorber

Country Status (7)

Country Link
US (1) US7777664B2 (zh)
EP (2) EP2081423A3 (zh)
JP (1) JP4461970B2 (zh)
KR (1) KR101253688B1 (zh)
CN (1) CN100471377C (zh)
TW (1) TWI372597B (zh)
WO (1) WO2006027978A1 (zh)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4461970B2 (ja) 2004-09-06 2010-05-12 三菱瓦斯化学株式会社 電波吸収体
WO2007046527A1 (ja) * 2005-10-21 2007-04-26 Nitta Corporation 通信改善用シート体ならびにそれを備えるアンテナ装置および電子情報伝達装置
KR100971931B1 (ko) * 2008-03-19 2010-07-23 한국전자통신연구원 전자파 저감 장치 및 방사체에서 전자파 저감 방법
KR101042601B1 (ko) * 2008-05-14 2011-06-20 한국전자통신연구원 저항성 재질을 이용한 공진형 전자파 흡수체
GB0811493D0 (en) * 2008-06-21 2008-07-30 Qinetiq Ltd Radio Frequency absorption
JP5222634B2 (ja) * 2008-06-23 2013-06-26 藤森工業株式会社 周波数選択型の電磁波シールド材を用いた電磁波吸収体
FR2936906B1 (fr) * 2008-10-07 2011-11-25 Thales Sa Reseau reflecteur a arrangement optimise et antenne comportant un tel reseau reflecteur
KR20100072383A (ko) 2008-12-22 2010-07-01 한국전자통신연구원 전자파 흡수체를 구비한 운송수단 용 자동 요금 징수 시스템, 운송용 장치, 건물형 구조물, 전자기기, 전자파 무반사실
GB0919198D0 (en) 2009-11-02 2009-12-16 Qinetiq Ltd Wind turbine blades
FR2967306B1 (fr) 2010-11-05 2019-06-07 Christian Lhomme Tissu absorbant les ondes electromagnetiques
GB201112740D0 (en) 2011-07-25 2011-09-07 Qinetiq Ltd Radiation absorption
WO2014071866A1 (zh) 2012-11-09 2014-05-15 深圳光启创新技术有限公司 反射阵面及反射阵列天线
CN102983404B (zh) * 2012-11-09 2013-10-30 深圳光启创新技术有限公司 调制电磁波辐射方向图的器件及天线
CN104334006A (zh) * 2013-07-22 2015-02-04 深圳光启创新技术有限公司 超材料和设备
CN103715513B (zh) * 2014-01-17 2016-03-30 中国科学院光电技术研究所 一种基于亚波长金属结构的宽频吸波材料
KR101587251B1 (ko) * 2014-11-25 2016-01-20 공주대학교 산학협력단 입사각에 독립적인 주파수 선택적 전자파 흡수장치 및 그 제조방법
JP6938217B2 (ja) * 2017-05-19 2021-09-22 株式会社デンソーテン アンテナ装置及びレーダ装置
JP7321484B2 (ja) * 2018-07-04 2023-08-07 地方独立行政法人東京都立産業技術研究センター 電波吸収構造
CN109121376A (zh) * 2018-10-10 2019-01-01 深圳市友华通信技术有限公司 电子设备防干扰方法及防干扰电子设备
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
JP2021163794A (ja) * 2020-03-30 2021-10-11 日東電工株式会社 電波吸収体
KR102407881B1 (ko) * 2020-09-25 2022-06-13 재단법인 파동에너지 극한제어 연구단 광대역 메타물질 흡수체
KR102391842B1 (ko) * 2021-01-20 2022-04-29 한국과학기술원 샌드위치 구조를 갖는 주파수 가변 전자기파 흡수체
CN113904125B (zh) * 2021-10-12 2023-03-07 南京大学 基于Non-foster有源结构的三维超宽带双极化吸波器
JP2024048902A (ja) * 2022-09-28 2024-04-09 株式会社ジャパンディスプレイ 電波反射装置
CN115674819B (zh) * 2023-01-03 2023-07-21 湖南博翔新材料有限公司 一种宽带吸波材料及其制备方法

Family Cites Families (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4621012A (en) 1984-11-15 1986-11-04 Gunter Pusch Camouflage net having a semiconductive layer
US5561428A (en) * 1985-02-12 1996-10-01 General Atomics Electromagnetic radiation absorber and method for the production thereof
US4728980A (en) 1985-08-05 1988-03-01 Minolta Camera Kabushiki Kaisha Automatic focusing device and automatic exposure control device
US4726980A (en) 1986-03-18 1988-02-23 Nippon Carbon Co., Ltd. Electromagnetic wave absorbers of silicon carbide fibers
US5576710A (en) 1986-11-25 1996-11-19 Chomerics, Inc. Electromagnetic energy absorber
US5223849A (en) * 1986-11-25 1993-06-29 Chomerics, Inc. Broadband electromagnetic energy absorber
US4948922A (en) * 1988-09-15 1990-08-14 The Pennsylvania State University Electromagnetic shielding and absorptive materials
GB9115970D0 (en) * 1991-07-24 1999-08-11 Secr Defence Brit Frequency selective radar absorbent structure
JPH05335832A (ja) 1991-12-24 1993-12-17 Tdk Corp 電波吸収体
JP3209453B2 (ja) 1992-07-22 2001-09-17 関西ペイント株式会社 電波反射防止体および電波反射防止方法
JPH0685532A (ja) 1992-09-04 1994-03-25 Bridgestone Corp 電波吸収体及びその製造方法
JP3209456B2 (ja) * 1992-10-27 2001-09-17 関西ペイント株式会社 電波反射防止体および電波反射防止法
US5455116A (en) 1992-10-27 1995-10-03 Kansai Paint Co., Ltd. Electromagnetic wave reflection-preventing material and electromagnetic wave reflection-preventing method
US5358787A (en) 1992-12-30 1994-10-25 Westinghouse Electric Corporation RF absorptive window
JP3076473B2 (ja) 1993-02-17 2000-08-14 関西ペイント株式会社 積層型電波反射防止体及び電波反射防止方法
WO1994024724A1 (en) 1993-04-09 1994-10-27 Chomerics, Inc. Broadband electromagnetic energy absorber
US5668663A (en) 1994-05-05 1997-09-16 Donnelly Corporation Electrochromic mirrors and devices
JP3030453B2 (ja) 1995-12-27 2000-04-10 道晴 高橋 広帯域電波吸収体
US5885692A (en) 1996-04-05 1999-03-23 Nisshinbo Industries, Inc. Wave absorber
JPH1051180A (ja) 1996-04-05 1998-02-20 Nisshinbo Ind Inc 電波吸収体
TW445380B (en) 1996-10-23 2001-07-11 Sumitomo Chemical Co Plasma display front panel
KR20000064579A (ko) 1997-01-13 2000-11-06 심메트릭스 코포레이션 전자파 흡수 패널
JPH11163585A (ja) * 1997-11-27 1999-06-18 Tokin Corp 電磁波制御板
US6207003B1 (en) * 1998-02-03 2001-03-27 Scaled Composites, Inc. Fabrication of structure having structural layers and layers of controllable electrical or magnetic properties
JPH11330775A (ja) * 1998-05-18 1999-11-30 Kansai Paint Co Ltd 透明性を有する積層型電波反射防止体及び電波反射防止方法
JP2000068677A (ja) * 1998-08-22 2000-03-03 Toso Co Ltd 選択性電磁遮蔽スクリーン
JP3942326B2 (ja) 1999-04-22 2007-07-11 株式会社クレハ 熱可塑性樹脂組成物
JP4790892B2 (ja) 2000-04-27 2011-10-12 ポリマテック株式会社 電波吸収体
JP4505948B2 (ja) * 2000-05-30 2010-07-21 凸版印刷株式会社 電磁波シールドルーム
JP2001352191A (ja) 2000-06-05 2001-12-21 Nippon Paint Co Ltd 電磁波吸収体
JP4474759B2 (ja) 2000-09-05 2010-06-09 凸版印刷株式会社 複数の周波数選択性を有する電波遮蔽体
JP2002158484A (ja) 2000-11-21 2002-05-31 Sony Corp 電波吸収体
US7079086B2 (en) * 2001-02-15 2006-07-18 Integral Technologies, Inc. Low cost electromagnetic field absorbing devices manufactured from conductive loaded resin-based materials
JP4793521B2 (ja) 2001-02-19 2011-10-12 大日本印刷株式会社 電波吸収体
JP2002314284A (ja) 2001-04-16 2002-10-25 Yokohama Rubber Co Ltd:The 電波吸収体
JP2002329995A (ja) 2001-05-07 2002-11-15 Shin Etsu Chem Co Ltd 電磁波吸収体
JP2002368479A (ja) * 2001-06-12 2002-12-20 Toppan Printing Co Ltd 電磁波シールド材
DE10132699A1 (de) 2001-07-05 2003-01-16 Philips Corp Intellectual Pty Organische elektrolumineszente Anzeigevorrichtung mit optischem Filter
JP4857500B2 (ja) 2001-08-30 2012-01-18 凸版印刷株式会社 電波吸収体
JP4547849B2 (ja) 2001-12-10 2010-09-22 洋司 小塚 電波吸収体の特性変更方法
JP2003209388A (ja) 2002-01-17 2003-07-25 Denki Kagaku Kogyo Kk 積層体
JP2003258483A (ja) 2002-02-28 2003-09-12 Toppan Printing Co Ltd 電磁波シールド転写材及び電磁波シールド材
US20040021597A1 (en) 2002-05-07 2004-02-05 Dvorak George J. Optimization of electromagnetic absorption in laminated composite plates
CN1668462B (zh) 2002-07-24 2010-11-03 Tdk株式会社 具有功能性层的转印用功能性膜、付与该功能性层的物体
JP4154942B2 (ja) * 2002-07-29 2008-09-24 凸版印刷株式会社 フィルム型電磁波吸収体
US20040094750A1 (en) 2002-11-19 2004-05-20 Soemantri Widagdo Highly filled composite containing resin and filler
JP2004181964A (ja) 2002-12-02 2004-07-02 Samsung Electronics Co Ltd インクジェットプリントヘッドのヒータ及びその製造方法
US20040189612A1 (en) 2003-03-27 2004-09-30 Bottari Frank J. Touch sensor using light control
JP2004356325A (ja) 2003-05-28 2004-12-16 Nitta Ind Corp 電磁波吸収体
JP2005079247A (ja) 2003-08-29 2005-03-24 Toppan Printing Co Ltd 電波吸収体
US7864095B2 (en) * 2004-02-27 2011-01-04 Mitsubishi Gas Chemical Company, Inc. Wave absorber and manufacturing method of wave absorber
JP4461970B2 (ja) 2004-09-06 2010-05-12 三菱瓦斯化学株式会社 電波吸収体

Also Published As

Publication number Publication date
JP2006073924A (ja) 2006-03-16
EP2081423A2 (en) 2009-07-22
KR101253688B1 (ko) 2013-04-11
EP1796450A1 (en) 2007-06-13
WO2006027978A1 (ja) 2006-03-16
TW200624035A (en) 2006-07-01
JP4461970B2 (ja) 2010-05-12
KR20070046936A (ko) 2007-05-03
EP2081423A3 (en) 2009-10-21
CN100471377C (zh) 2009-03-18
US20070247349A1 (en) 2007-10-25
US7777664B2 (en) 2010-08-17
EP1796450A4 (en) 2007-12-12
CN101010999A (zh) 2007-08-01

Similar Documents

Publication Publication Date Title
TWI372597B (en) Radio wave absorber
EP1806961A4 (en) ABSORBER FOR ELECTROMAGNETIC WAVES
HK1098631A1 (en) Electromagnetic wave absorber
EP1722618A4 (en) ABSORBER FOR ELECTROMAGNETIC WAVES
EP1763905A4 (en) ANTENNA COMPONENT
EP1810366A4 (en) ANTENNA COMPONENT
EP1947923A4 (en) ELECTROMAGNETIC WAVE ABSORBER
GB0412277D0 (en) Antenna structure
GB0714958D0 (en) Mobile radio unit
EP1768355A4 (en) PORTABLE RADIO
EP1912487A4 (en) ABSORBER FOR ELECTROMAGNETIC WAVES
EP1853103A4 (en) RADIO WAVES shielding
PL1569297T3 (pl) Antena o bardzo szerokim paśmie V-UHF
EP1947776A4 (en) RADIO RECEIVER
EP1879257A4 (en) BROADBAND ANTENNA
GB0505771D0 (en) Dielectrically-loaded antenna
TWI369940B (en) Radio wave shield
EP2068610A4 (en) RADIO WAVE ABSORBER AND METHOD FOR PRODUCING THE SAME
EP1859507A4 (en) ANTENNA COMPONENT
GB0417456D0 (en) Low power radio
GB2441061B (en) An antenna
TWI372489B (en) Multi-band antenna
EP1589680A4 (en) ANTENNA UNIT
EP1826871A4 (en) ANTENNA
EP1790031A4 (en) INTEGRATED ANTENNA

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees