JPS57129003A - Microwave absorber - Google Patents

Microwave absorber

Info

Publication number
JPS57129003A
JPS57129003A JP56013777A JP1377781A JPS57129003A JP S57129003 A JPS57129003 A JP S57129003A JP 56013777 A JP56013777 A JP 56013777A JP 1377781 A JP1377781 A JP 1377781A JP S57129003 A JPS57129003 A JP S57129003A
Authority
JP
Japan
Prior art keywords
volume ratio
whose volume
absorber
rubber
plastic
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.)
Granted
Application number
JP56013777A
Other languages
Japanese (ja)
Other versions
JPS641080B2 (en
Inventor
Takeshi Ishino
Taro Miura
Kenichi Ichihara
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
Priority to JP56013777A priority Critical patent/JPS57129003A/en
Publication of JPS57129003A publication Critical patent/JPS57129003A/en
Publication of JPS641080B2 publication Critical patent/JPS641080B2/ja
Granted 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

Landscapes

  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To decide the center frequency by only adjusting the thickness of an absorber, by dispersively mixing ferrite whose volume ratio to rubber or plastic is >=0.15 and <=0.35, and carbonyl iron whose volume ratio is >=0.1 and <=0.25. CONSTITUTION:A microwave absorber is formed by an electromagnetic wave absorbing layer 2 consisting of rubber or plastic into which a magnetic substance has been mixed dispersively, and a metallic plate 1 provided on one surface of the absorbing layer 2. In this case, the magnetic substance is formed by ferrite and carbonyl iron, and the ferrite whose volume ratio to rubber or plastic is >=0.15 and <=0.35, and the carbonyl iron whose volume ratio is >=0.1 and <=0.25 are mixed dispersively. In this way, the center frequency is decided by only adjusting the thickness of the absorber 2, and the yield rate is raised.
JP56013777A 1981-02-03 1981-02-03 Microwave absorber Granted JPS57129003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56013777A JPS57129003A (en) 1981-02-03 1981-02-03 Microwave absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56013777A JPS57129003A (en) 1981-02-03 1981-02-03 Microwave absorber

Publications (2)

Publication Number Publication Date
JPS57129003A true JPS57129003A (en) 1982-08-10
JPS641080B2 JPS641080B2 (en) 1989-01-10

Family

ID=11842666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56013777A Granted JPS57129003A (en) 1981-02-03 1981-02-03 Microwave absorber

Country Status (1)

Country Link
JP (1) JPS57129003A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0945916A2 (en) * 1998-03-23 1999-09-29 Fuji Polymer Industries Co,, Ltd. Electromagnetic wave absorbing thermoconductive silicone gel molded sheet and method for producing the same
JP2001189585A (en) * 1999-12-28 2001-07-10 Daido Steel Co Ltd Electromagnetic wave absorber utilizing high-order absorption peak
WO2006059502A1 (en) * 2004-11-30 2006-06-08 Bridgestone Corporation Rubber composition for wave absorber and wave absorbing sheet
CZ306440B6 (en) * 2014-01-22 2017-01-25 Univerzita Tomáše Bati ve Zlíně A broadband absorber of electromagnetic radiation and the method of its production
CN111590232A (en) * 2019-02-20 2020-08-28 北京梦之墨科技有限公司 Welding material and preparation method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0945916A2 (en) * 1998-03-23 1999-09-29 Fuji Polymer Industries Co,, Ltd. Electromagnetic wave absorbing thermoconductive silicone gel molded sheet and method for producing the same
EP0945916A3 (en) * 1998-03-23 2000-06-07 Fuji Polymer Industries Co,, Ltd. Electromagnetic wave absorbing thermoconductive silicone gel molded sheet and method for producing the same
US6284363B1 (en) 1998-03-23 2001-09-04 Fuji Polymer Industries Co., Ltd. Electromagnetic wave absorbing thermoconductive silicone gel molded sheet and method for producing the same
US6521150B1 (en) 1998-03-23 2003-02-18 Fuji Polymer Industries Co., Ltd. Method for producing an electromagnetic wave absorbing thermoconductive silicone gel molded sheet
JP2001189585A (en) * 1999-12-28 2001-07-10 Daido Steel Co Ltd Electromagnetic wave absorber utilizing high-order absorption peak
WO2006059502A1 (en) * 2004-11-30 2006-06-08 Bridgestone Corporation Rubber composition for wave absorber and wave absorbing sheet
CZ306440B6 (en) * 2014-01-22 2017-01-25 Univerzita Tomáše Bati ve Zlíně A broadband absorber of electromagnetic radiation and the method of its production
CN111590232A (en) * 2019-02-20 2020-08-28 北京梦之墨科技有限公司 Welding material and preparation method thereof

Also Published As

Publication number Publication date
JPS641080B2 (en) 1989-01-10

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