PURPOSE: To achieve wide-band characteristics and a thin body and then enable handing to be made easily when executing in terms of flexibility and machinability by laminating a magnetic material layer where a ferrite powder is mixed and a conductive material layer for assembling a resonant circuit.

CONSTITUTION: A magnetic material layer 1 is formed by mixing a magnetic body powder of spinel ferrite such as nickel zinc and manganese - zinc with a grain diameter of 0.1-3mm into a resin such as epoxy resin, chloroprene rubber, polyethylene, and polystylene by 70wt.% or higher. Then, a conducive material layer 2 where powder of improved conductors such as each kind of metal such as carbon, copper, nickel, aluminum, or iron or these alloys is laminated on the magnetic material layer 1 and the rear of the magnetic layer 1 is backed, thus achieving a thin body and wide-band absorbing characteristics for improving defects such as hardness and fragility caused by a conventional ferrite sintered body.