Structure and Characteristics of Wire Inductor

Abstract

The miniaturization of magnetic cores wound by copper wire is difficult because of the structure. In this paper the authors describe a miniaturized inductor containing amorphous magnetic wire which they have succeeded in realizing with a large inductance per unit volume. Further, the size of the inductor is smaller than that of inductors with conventional cores.
The frequency characteristics of inductance of the wire inductor is controlled by the demagnetizing factor of the amorphous wire, and one thus can realize an inductor which operates in sub-MHz frequency domain.