Patent ID: 8043727

Claim:
An electromagnetic wave-absorption multilayer substrate comprising: an electromagnetic wave-absorption sheet which includes a soft magnetic alloy powder and a binding agent and which has a sheet shape; and two insulating substrates which have facing surfaces facing the electromagnetic wave-absorption sheet and which sandwich the electromagnetic wave-absorption sheet and are pressure-bonded thereto, wherein at least one of the two insulating substrates has at least one hole formed in the facing surface or at least one protrusion formed on the facing surface such that a portion of the electromagnetic wave-absorption sheet corresponding to the hole or corresponding to non-protrusion is not or less compressed by the insulating substrates compared to other portions of the electromagnetic wave-absorption sheet between the insulating substrates when the insulating substrates are pressure-bonded, and wherein said at least one hole has a depth less than a thickness of the insulating substrate and does not penetrate the insulating substrate.