Patent ID: 7956715

Claim:
An inductor comprising a substrate and a planar conductor structure on a surface of the substrate, the planar conductor structure having a total thickness of from 0.1 μm to 5 μm and comprising a vertical stack of at least fourteen multilayer films, each multilayer film comprising a first layer consisting essentially of aluminum, the first layer defining a first vertical thickness; and a second layer consisting essentially of copper, the second layer covering the first layer and defining a second vertical thickness, such that the first vertical thickness is substantially the same in all multilayer films of the vertical stack and such that the ratio of the first vertical thickness to the second vertical thickness is about 2 in all multilayer films of the vertical stack, the vertical stack being formed by a repetitive series of alternating depositions of first layers of aluminum and second layers of copper onto the substrate; a first contact point; and a second contact point, the inductor exhibiting a negative electrical self-inductance when an electric signal of alternating current having a frequency of up to 10 MHz is transmitted from the first contact point to the second contact point.