TUNABLE INDUCTIVE COMPONENT AND USE OF THE COMPONENT

摘要

The invention relates to a tunable inductive component comprising at least one ceramic multi-layer body having at least one ferrite layer having ferritic material and at least one coil integrated in the volume of the multi-layer body. A permeability of the ferrite layer is dependent on a mechanical stress acting on the ferrite layer, the coil being integrated in the volume of the multi-layer body such that an inductivity of the coil is dependent on the permeability of the ferrite layer, and a means for transferring the mechanical stress to the ferrite layer is provided, so that the permeability of the ferrite layer can be adjusted. The means for transferring the mechanical stress is, for example, an integrated piezo-element. The tunable inductive component is used in filter or oscillator circuits. The component can also be used as a pressure sensor.