DE69912225D1 - Absorber für Funkwellen - Google Patents

Absorber für Funkwellen

Info

Publication number
DE69912225D1
DE69912225D1 DE69912225T DE69912225T DE69912225D1 DE 69912225 D1 DE69912225 D1 DE 69912225D1 DE 69912225 T DE69912225 T DE 69912225T DE 69912225 T DE69912225 T DE 69912225T DE 69912225 D1 DE69912225 D1 DE 69912225D1
Authority
DE
Germany
Prior art keywords
absorber
radio waves
waves
radio
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 - Lifetime
Application number
DE69912225T
Other languages
English (en)
Other versions
DE69912225T2 (de
Inventor
Taku Murase
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Application granted granted Critical
Publication of DE69912225D1 publication Critical patent/DE69912225D1/de
Publication of DE69912225T2 publication Critical patent/DE69912225T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)
  • Hard Magnetic Materials (AREA)
  • Aerials With Secondary Devices (AREA)
DE69912225T 1998-12-04 1999-12-02 Absorber für Funkwellen Expired - Lifetime DE69912225T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP36184298 1998-12-04
JP36184298A JP3422709B2 (ja) 1998-12-04 1998-12-04 電波吸収体

Publications (2)

Publication Number Publication Date
DE69912225D1 true DE69912225D1 (de) 2003-11-27
DE69912225T2 DE69912225T2 (de) 2004-08-05

Family

ID=18475041

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69912225T Expired - Lifetime DE69912225T2 (de) 1998-12-04 1999-12-02 Absorber für Funkwellen

Country Status (7)

Country Link
US (1) US6146545A (de)
EP (1) EP1006610B1 (de)
JP (1) JP3422709B2 (de)
KR (1) KR100480214B1 (de)
CN (1) CN1222486C (de)
DE (1) DE69912225T2 (de)
TW (1) TWI227709B (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002057485A (ja) * 2000-06-01 2002-02-22 Yokohama Rubber Co Ltd:The 電波吸収体組成物
KR20020030232A (ko) * 2000-10-16 2002-04-24 이해진 복합 세라믹 전자파 흡수체의 조성물과 그 제조방법
AU2003266734A1 (en) * 2003-08-06 2005-02-25 Evgeny Nikolaevich Ananev Anti-radar material
JP2006160584A (ja) * 2004-12-10 2006-06-22 Sumida Corporation Ｎｉ−Ｚｎ系フェライト組成物およびアンテナコイル
JP2007091539A (ja) * 2005-09-29 2007-04-12 Tdk Corp 非磁性Ｚｎフェライトおよびこれを用いた複合積層型電子部品
JP4935824B2 (ja) * 2006-10-19 2012-05-23 日立金属株式会社 電波吸収材料及び電波吸収体
JP4488078B2 (ja) * 2008-03-10 2010-06-23 Ｔｄｋ株式会社 電波吸収体
JP5083558B2 (ja) * 2008-05-30 2012-11-28 戸田工業株式会社 ノイズ抑制シート
JP4752934B2 (ja) * 2009-03-05 2011-08-17 Ｔｄｋ株式会社 電波吸収体およびその製造方法
RU2447551C1 (ru) * 2011-03-22 2012-04-10 Федеральное государственное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" Безэховая камера
RU2473998C2 (ru) * 2011-04-21 2013-01-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" Радиопоглощающий феррит
RU2454747C1 (ru) * 2011-04-21 2012-06-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" Способ получения радиопоглощающего магний-цинкового феррита
WO2013031842A1 (ja) 2011-09-02 2013-03-07 株式会社 村田製作所 フェライト磁器組成物、セラミック電子部品、及びセラミック電子部品の製造方法
RU2587456C2 (ru) * 2011-10-13 2016-06-20 Ооо Нпп "Радиострим" Способ получения никель-цинкового феррита с высокими диэлектрическими потерями
RU2486645C2 (ru) * 2011-10-13 2013-06-27 Общество с ограниченной ответственностью Научно-производственное предприятие "РАДИОСТРИМ" Способ получения радиопоглощающего никель-цинкового феррита
CN102711427A (zh) * 2012-06-20 2012-10-03 张小亚 多功能电磁辐射吸收器
RU2536151C1 (ru) * 2013-09-26 2014-12-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" Способ спекания радиопоглащающих магний-цинковых ферритов
CN104193314A (zh) * 2014-08-14 2014-12-10 蕲春县蕊源电子有限公司 一种高磁导率软磁铁氧体材料及其制备方法
TWI655168B (zh) * 2017-11-14 2019-04-01 中國鋼鐵股份有限公司 硬式磁性吸波材料及其製造方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938152A (en) * 1963-06-03 1976-02-10 Mcdonnell Douglas Corporation Magnetic absorbers
US3720951A (en) * 1970-05-11 1973-04-03 Tdk Electronics Co Ltd Microwave absorbing wall element
JP2706772B2 (ja) * 1987-09-14 1998-01-28 富士電気化学株式会社 電波吸収体用マグネシウム−亜鉛系フエライト材
JP2806528B2 (ja) * 1988-05-28 1998-09-30 富士電気化学株式会社 電波吸収体用マグネシウム−亜鉛系フェライト材
JP2794293B2 (ja) * 1988-06-02 1998-09-03 住友特殊金属 株式会社 電波吸収材料
JP2799614B2 (ja) * 1989-12-27 1998-09-21 株式会社トーキン 電波吸収体用酸化物磁性材料
JP2898343B2 (ja) * 1990-04-11 1999-05-31 株式会社トーキン 酸化物磁性材料及びその製造方法
JPH05129123A (ja) * 1991-11-07 1993-05-25 Tokin Corp 酸化物磁性材料及びそれを使用した電波吸収体
JPH0684622A (ja) * 1992-09-04 1994-03-25 Tokin Corp 電波吸収体
JP3554050B2 (ja) * 1994-11-30 2004-08-11 京セラ株式会社 高強度フェライトとこれを用いたフェライト基板及び電磁波吸収部材
KR0131840B1 (ko) * 1995-05-31 1998-04-13 김익명 Ni-Cu-Zn계 산화물 자성재료
JPH098490A (ja) * 1995-06-21 1997-01-10 Nippon Paint Co Ltd 電子機器筐体及び不要輻射波低減方法
JP3278373B2 (ja) * 1997-02-06 2002-04-30 ティーディーケイ株式会社 電波吸収体およびその製造方法

Also Published As

Publication number Publication date
DE69912225T2 (de) 2004-08-05
EP1006610A3 (de) 2001-05-23
EP1006610B1 (de) 2003-10-22
EP1006610A2 (de) 2000-06-07
TWI227709B (en) 2005-02-11
CN1259499A (zh) 2000-07-12
JP3422709B2 (ja) 2003-06-30
JP2000169217A (ja) 2000-06-20
KR20000047782A (ko) 2000-07-25
CN1222486C (zh) 2005-10-12
KR100480214B1 (ko) 2005-04-06
US6146545A (en) 2000-11-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition