Tunable three dimentional inductor

A tunable three-dimensional inductor includes a substrate, a plurality of pads, a plurality of conductive members, a first trace, and a bonding wire. The pads are formed on a surface of the substrate, and the conductive members and the first trace are embedded in the substrate. Each of the conductive members is electrically connected to one of the pads on the substrate. The first trace is electrically connected to two of the conductive members. The bonding wire is connected between two of the pads on the substrate such that the bonding wire, the conductive members and the first trace form a three-dimensional inductance path.