JPS6482696A - Radio wave absorber - Google Patents

Radio wave absorber

Info

Publication number
JPS6482696A
JPS6482696A JP62242132A JP24213287A JPS6482696A JP S6482696 A JPS6482696 A JP S6482696A JP 62242132 A JP62242132 A JP 62242132A JP 24213287 A JP24213287 A JP 24213287A JP S6482696 A JPS6482696 A JP S6482696A
Authority
JP
Japan
Prior art keywords
fiber
layers
epsilone
increased
fabric
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
JP62242132A
Other languages
Japanese (ja)
Other versions
JP2917271B2 (en
Inventor
Takashi Harada
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP62242132A priority Critical patent/JP2917271B2/en
Publication of JPS6482696A publication Critical patent/JPS6482696A/en
Application granted granted Critical
Publication of JP2917271B2 publication Critical patent/JP2917271B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Laminated Bodies (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To form a radio wave absorber in which its height and weight are reduced by composing it of polymer fiber nonwoven fabric coating a conductor. CONSTITUTION:A laminated structure 1 in which nonwoven fabrics dispersed with polymer fiber 2 coated with metal are laminated is formed on a metal surface 3. The nonwoven fabrics for forming the layers are formed, for example, by dispersing nickel-coated polyacrylic nitrile fiber 2 in binder-fiber 4 made of polyethylene and polypyrene, being extremely light. As the content ratio of the fiber 1 dispersed in the fabric is increased, the equivalent dielectric constant epsilone of the whole fabric is increased in both real section epsilone' and imaginary section epsilone'', and its magnetic permeability is increased. Since the structure 1 of such multilayer has a small variation in the equivalent dielectric constant of adjacent layers when an electromagnetic wave incident to the surface 5 of the structure is propagated in the structure 1, the reflection of the wave in the boundary of the layers is suppressed, and the electromagnetic energy is gradually intaken to the layers having larger losses. Therefore, preferable electromagnetic wave absorbing characteristic is obtained in a wide band.
JP62242132A 1987-09-25 1987-09-25 Radio wave absorber Expired - Lifetime JP2917271B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62242132A JP2917271B2 (en) 1987-09-25 1987-09-25 Radio wave absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62242132A JP2917271B2 (en) 1987-09-25 1987-09-25 Radio wave absorber

Publications (2)

Publication Number Publication Date
JPS6482696A true JPS6482696A (en) 1989-03-28
JP2917271B2 JP2917271B2 (en) 1999-07-12

Family

ID=17084781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62242132A Expired - Lifetime JP2917271B2 (en) 1987-09-25 1987-09-25 Radio wave absorber

Country Status (1)

Country Link
JP (1) JP2917271B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6521829B2 (en) 1999-03-25 2003-02-18 Japan Science And Technology Corporation Electromagnetic wave absorbing sheet
JP2003209388A (en) * 2002-01-17 2003-07-25 Denki Kagaku Kogyo Kk Laminate
JP2004104063A (en) * 2002-07-18 2004-04-02 Hokkaido Univ Electromagnetic wave absorber
JP2004154324A (en) * 2002-11-06 2004-06-03 Aehf Japan Kk Medical examination and treatment facility of chemical intolerance and electromagnetic wave hyperesthesia easily leading to complication with each other
US11958308B1 (en) 2023-05-31 2024-04-16 G13 Innovation In Production Ltd Thermal paper, and methods and systems for forming the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934701A (en) * 1982-08-23 1984-02-25 Tdk Corp Radio wave absorber
JPS6181443A (en) * 1984-09-28 1986-04-25 Chuetsu Pulp Kogyo Kk Magnetic cellulosic material and its preparation
JPS61127198A (en) * 1984-11-26 1986-06-14 日本精線株式会社 Conductive composite body and manufacture thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934701A (en) * 1982-08-23 1984-02-25 Tdk Corp Radio wave absorber
JPS6181443A (en) * 1984-09-28 1986-04-25 Chuetsu Pulp Kogyo Kk Magnetic cellulosic material and its preparation
JPS61127198A (en) * 1984-11-26 1986-06-14 日本精線株式会社 Conductive composite body and manufacture thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6521829B2 (en) 1999-03-25 2003-02-18 Japan Science And Technology Corporation Electromagnetic wave absorbing sheet
JP2003209388A (en) * 2002-01-17 2003-07-25 Denki Kagaku Kogyo Kk Laminate
JP2004104063A (en) * 2002-07-18 2004-04-02 Hokkaido Univ Electromagnetic wave absorber
JP2004154324A (en) * 2002-11-06 2004-06-03 Aehf Japan Kk Medical examination and treatment facility of chemical intolerance and electromagnetic wave hyperesthesia easily leading to complication with each other
US11958308B1 (en) 2023-05-31 2024-04-16 G13 Innovation In Production Ltd Thermal paper, and methods and systems for forming the same

Also Published As

Publication number Publication date
JP2917271B2 (en) 1999-07-12

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