| 摘要 |
PROBLEM TO BE SOLVED: To obtain a method for manufacturing a cured wave absorber which is constituted by laminating a plurality of layers composed of alternately laminated ferrite-based magnetic layers and carbon-based dielectric layers upon a carbon layer, which is formed by kneading a thermosetting resin or filler mixed with >=30 wt.% carbon powder and molding the kneaded mixture to a layer of about 1-5 mm in thickness, so as to improve the workability and easiness in construction of the absorber and to contrive energy saving. SOLUTION: A cured radio wave absorber is constituted by successively laminating a fourth layer 14 composed of a magnetic layer containing 80 wt.% ferrite powder and having a thickness of 10 mm, a third layer 13 composed of a dielectric layer containing 30 wt.% carbon powder and having a thickness of 12 mm, a second layer 12 composed of a magnetic layer containing 80 wt.% ferrite power and having a thickness of 5 mm, and a first layer 11 composed of a carbon layer containing 30 wt.% carbon power and having a thickness of 1 mm and a mesh resistance of 40Ω(square) upon another. Consequently, the radio wave absorber can obtain a radio wave absorption factor of 97% over a wide frequency range from a lower limit frequency of about 300 MHz to an upper limit frequency of about 1,200 MHz.
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