Birch, Stewart, Kolasch & Birch, LLP
Electromagnetic absorber
Provided is an electromagnetic-wave absorber that can favorably absorb electromagnetic waves of a plurality of different frequencies in a high frequency band equal to or higher than the millimeter-wave band. The electromagnetic-wave absorber includes an electromagnetic-wave absorbing layer 1 in which a plurality of magnetic layers 1a-1e are stacked, each magnetic layer containing magnetic iron oxide that magnetically resonates at a high frequency in a band equal to or higher than the millimeter-wave band. A value of an anisotropic magnetic field (HA) of the magnetic iron oxide contained in at least one of the magnetic layers is different from that of the magnetic iron oxide contained in another of the magnetic layers.
MAXELL HOLDINGS, LTD.
B H B H H H H H H B B H H
B32B H05K B32B H05K H01F H05K H05K H05K H01F B32B B32B H01F H01F
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Toshio Masao
Hiroi Fujita