JPS57129002A - Electromagnetic wave absorber - Google Patents

Electromagnetic wave absorber

Info

Publication number
JPS57129002A
JPS57129002A JP1377681A JP1377681A JPS57129002A JP S57129002 A JPS57129002 A JP S57129002A JP 1377681 A JP1377681 A JP 1377681A JP 1377681 A JP1377681 A JP 1377681A JP S57129002 A JPS57129002 A JP S57129002A
Authority
JP
Japan
Prior art keywords
electromagnetic wave
wave absorber
conductive particles
final layer
rubber
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.)
Pending
Application number
JP1377681A
Other languages
Japanese (ja)
Inventor
Takeshi Ishino
Takashi Watanabe
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 JP1377681A priority Critical patent/JPS57129002A/en
Publication of JPS57129002A publication Critical patent/JPS57129002A/en
Pending 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

  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To control the electric conductivity so as to have wide band characteristics, by forming a layer which is tightly coupled with a metallic substrate by rubber or plastic into which conductive particles have been mixed, in an electromagnetic wave absorber having plural formed substance layers. CONSTITUTION:An electromagnetic wave absorber is formed by laminating plural formed substance layers 10a, 10b and 10c whose conductive particle contents are different respectively, in order of its density, and tightly coupling its final layer 10d with a metallic substrate 20. In this case, the final layer 10d is formed by rubber or plastic into which conductive particles have been mixed dispersively. In this way, the uniform dispersion of the conductive particles in the final layer 10d, and the control of the electric conductivity are executed easily, and the reflection loss is improved by 5-10dB or so.
JP1377681A 1981-02-03 1981-02-03 Electromagnetic wave absorber Pending JPS57129002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1377681A JPS57129002A (en) 1981-02-03 1981-02-03 Electromagnetic wave absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1377681A JPS57129002A (en) 1981-02-03 1981-02-03 Electromagnetic wave absorber

Publications (1)

Publication Number Publication Date
JPS57129002A true JPS57129002A (en) 1982-08-10

Family

ID=11842639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1377681A Pending JPS57129002A (en) 1981-02-03 1981-02-03 Electromagnetic wave absorber

Country Status (1)

Country Link
JP (1) JPS57129002A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013081043A1 (en) * 2011-11-30 2015-04-27 加川　清二 Composite electromagnetic wave absorbing sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013081043A1 (en) * 2011-11-30 2015-04-27 加川　清二 Composite electromagnetic wave absorbing sheet

Similar Documents

Publication Publication Date Title
EP0090432B2 (en) Electro-magnetic wave absorbing material
US4474676A (en) Electromagnetic interference shielding material
Tan et al. PANI/FeCo@ C composite microspheres with broadband microwave absorption performance
KR20200105625A (en) Composite material for shielding electromagnetic radiation, raw material for additive manufacturing methods and a product comprising the composite material as well as a method of manufacturing the product
US4522890A (en) Multilayer high attenuation shielding structure
US4378322A (en) Electromagnetic radiation shielding composites and method of production thereof
EP0427858A4 (en) Antibacterial or conductive composition and applications thereof
WO2001078085A3 (en) Low density dielectric having low microwave loss
EP0180383A3 (en) A manufacturing method for housings with a two-layer structure
FR2437250A1 (en) PROCESS FOR PRODUCING AN ELECTRICALLY CONDUCTIVE COATING LAYER ON AN INSULATING BODY, AS WELL AS A BODY PROVIDED WITH SUCH A COATING
JPS57129002A (en) Electromagnetic wave absorber
JPS6312198A (en) Electric wave absorbing electromagnetic shielding member
CN1364052A (en) Composite material for electromagnetic shielding
WO1984004428A3 (en) Coaxial cables and couplings therefor
Hashimoto et al. Design and manufacturing of resistive-sheet type wave absorber at 60GHz frequency band
JP2518626B2 (en) Electromagnetic wave shielding sheet and manufacturing method thereof
EP0114802A3 (en) Layered material with an electric conductive layer and process for its manufacture
JPS57129003A (en) Microwave absorber
JP2008028964A (en) Strip line type left-hand system line
JPS6442890A (en) Printed substrate
GB851923A (en) Improvements in or relating to radomes
JPS5555432A (en) Magnetic recording medium
JPS6429461A (en) Electrical conductive composition
Du et al. Microwave lens design for a conical horn antenna
Kumagai et al. Electromagnetic Shielding Properties of Mica Composite Materials