| 摘要 |
PROBLEM TO BE SOLVED: To provide a reliable, thin and lightweight electromagnetic wave absorber exhibiting improved absorbing performance capable of absorbing electromagnetic waves over an extremely wide range. SOLUTION: A porous substrate 3 has a number of through-holes 2. Absorbing films 8, composed of the mixture of an electromagnetic wave absorbing filler and an electromagnetic wave absorbing polymeric material, are formed on circumferential surfaces of the through-holes. The through-holes are not blocked with the absorbing films 8 to have gas permeability. COPYRIGHT: (C)2004,JPO
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