Title:
RADIO WAVE ABSORBING PANEL STRUCTURE
Document Type and Number:
Japanese Patent JP2000114863
Kind Code:
A
Abstract:
To absorb the radio waves over a wide frequency range in various incident angles.
An exterior member, an air layer, a radio wave absorber and a reflector are arranged in this order. In this case, as the structure of the radio wave absorber, a ferrite stick 3 having width A of 5 to 9 mm and thickness B of 15 to 22 mm is used, the ferrite sticks 3 are arranged with the gap rate of 50 to 81% in the electric field direction of coming radio waves and continuously in magnetic field direction and the ferrite sticks 3 are fixed in grooves 2 on the bottom of a box-shaped metal case 1.
Inventors:
TANIGUCHI NAONOBU
FUKUDA KUNIO
TAMAKAI TOSHIYUKI
TANAKA TOSHIHIKO
FUKUDA KUNIO
TAMAKAI TOSHIYUKI
TANAKA TOSHIHIKO
Application Number:
JP28487298A
Publication Date:
April 21, 2000
Filing Date:
October 07, 1998
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
H05K9/00; H01Q17/00; (IPC1-7): H01Q17/00; H05K9/00
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