| 摘要 |
PROBLEM TO BE SOLVED: To obtain a radio-wave absorber satisfying both sound absorbing characteristic and radio-wave absorbing characteristic without deteriorating dependence on the angle of the radio-wave absorbing characteristic within a closed space, wherein a noise generating source is arranged in the same direction as the incident direction of radio-wave or within the half-closed space. SOLUTION: A cohesive material of fiber is used, in which a complex specific dielectric coefficient is inclined toward the radiating direction from the incident side of the radio-wave. Moreover, the cohesive material of fiber of different complex specific dielectric coefficient is molded into a sheet for use. The cohesive material of fiber is formed as a mixture of glass wool and carbon fiber. Moreover, single surface of the radio-wave incident side is provided with an external packaging material having an aperture, while the other single surface is provided with a metal plate. COPYRIGHT: (C)2004,JPO
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