Title:
電磁波吸収パネル及びその材料
Document Type and Number:
Japanese Patent JP3852619
Kind Code:
B2
Abstract:
An electromagnetic wave absorption panel (100) for use in building construction includes an absorber layer (106) that utilizes novel materials such as layered superlattice materials, garnets, magnetoresistive materials, conducting oxides, such as LSM, magnetoplumbites, signet magnetics, Fe3O4, Ni0.4Zn0.6Fe2O4, and polymer composites of the above materials. The absorber layer is preferably a multi-component structure such as a layer of a ferrite (114) combined with one or more of the above materials. The invention also includes: a multi-component absorber element (106) having an effective real part of the permitivity, ELEMENT 'eff, and an effective real part of the permeability, mu 'eff, such that ( ELEMENT 'eff mu 'eff)<1/2> SIMILAR 1/f over said range of frequencies, where f is the frequency of the incident wave; and a multi-component absorber element (106) having an effective real part of the permitivity, ELEMENT 'eff, that decreases with frequency.
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Inventors:
Vikram Yoshi
Kimura Kenichi
Carlos A. Pas de Arrojo
Kiyokawa Hiroshi
Kimura Kenichi
Carlos A. Pas de Arrojo
Kiyokawa Hiroshi
Application Number:
JP53112298A
Publication Date:
December 06, 2006
Filing Date:
January 12, 1998
Export Citation:
Assignee:
Symmetrics Corporation
Fujita Co., Ltd.
Fujita Co., Ltd.
International Classes:
H05K9/00; E04B1/92; H01Q17/00
Domestic Patent References:
JP5291784A | ||||
JP4354103A | ||||
JP8204379A | ||||
JP6224583A |
Foreign References:
EP0468887A1 |
Attorney, Agent or Firm:
Shigeru Noda