Title:
THIN LAYER ELECTROMAGNETIC WAVE ABSORBING BODY
Document Type and Number:
Japanese Patent JPH01138799
Kind Code:
A
Abstract:
PURPOSE:To enable a soft ferrite plate to decrease in a soft ferrite content, make it thin, and make its absorbing property broader in band by a method wherein soft ferrite and permanent magnet are compounded to enable an electromagnetic wave absorbing property of the ferrite to be effectively displayed. CONSTITUTION:Soft ferrite and permanent magnet can be compounded in such a composite state that soft ferrite particles and permanent magnet particles are mixed and dispersed to form a particle dispersed composite type or soft ferrite plates and permanent magnet plates are laminated to form a laminated composite type. Moreover, when a particle dispersed composite is formed, for example, it is an adequate way that powder 1 of soft ferrite and permanent magnet is dispersedly mixed and incorporated into urethane resin 2 or the like through a conventional method to mold a plate-like piece 3. And, forming a laminated composite type, for example, a plate-like sintered piece 4 of soft ferrite and a permanent magnet plate-like piece 5 are laminated into a piece 6. In this process, a non-sintered piece can be used as a permanent magnet plate-like piece 5, but it is desirable that a permanent magnet plate-like piece is a sintered piece when being used as a wall material.
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Inventors:
SUZUKI TAKESHI
Application Number:
JP8279088A
Publication Date:
May 31, 1989
Filing Date:
April 04, 1988
Export Citation:
Assignee:
INAX CORP
International Classes:
H05K9/00; H01Q17/00; (IPC1-7): H01Q17/00; H05K9/00
Attorney, Agent or Firm:
Tsuyoshi Shigeno
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