Title:
RADIO WAVE ABSORBER
Document Type and Number:
Japanese Patent JP2005203438
Kind Code:
A
Abstract:
To provide a radio wave absorber having radio wave absorption characteristics with a reflection attenuation of 15 dB or more, especially, 20 dB or more for radio waves at frequencies of 2.4 GHz, 5.2 GHz for radio LANs.
The radio absorber comprises a first resistance layer 1 having a surface resistance of 3,000-5,000 Ω/square, a first interior material layer 11, a second resistance layer 2 having a surface resistance of 150-250 Ω/square, a second interior layer 12, and a reflective layer 3 laminated in this order from the radio wave incidence side. It is used for absorbing unwanted radio waves in the radio LAN radio waves.
Inventors:
KUDO TOSHIO
ITO HIROTAKA
IJIRI YASUO
KASHIWABARA KAZUYUKI
ITO HIROTAKA
IJIRI YASUO
KASHIWABARA KAZUYUKI
Application Number:
JP2004005714A
Publication Date:
July 28, 2005
Filing Date:
January 13, 2004
Export Citation:
Assignee:
MITSUBISHI CABLE IND LTD
International Classes:
H05K9/00; (IPC1-7): H05K9/00
Attorney, Agent or Firm:
Takeshi Nakatani