DEVICE FOR MECHANICALLY REGULATING AN ELECTRICAL CAPACITANCE, AND METHOD FOR MAKING SAME

摘要

The invention concerns a device for mechanically regulating an electrical capacitance. Said device comprises a first electrode structure (10) including first (16) and second (24) surfaces, the first surface (16) having at least a projecting portion (18a 18d). The device also comprises a second electrode structure (12), spaced apart from the first electrode structure (10) and including at least a recess (20a 20d) arranged in such a way that the projecting portion(s) (18a 18d) of the first electrode structure (10) project(s) into said recess, an electrical capacitance being determined between the opposite surface zones of the first (10) and of the second (12) electrode structures. A third electrode structure (14) for regulating the electrical capacitance is arranged between the first (10) and the second (12) electrode structures . Said third electrode structure (14) is spaced apart from the first electrode structure (10) and located opposite said second surface (24). The first electrode structure (10) is configured to be freely mobile relative to the second (12) and third (14) electrode structures. Thus, when an electric voltage is applied between the first (10) and the third (14) electrode structures, the electrical capacitance can be regulated, by modifying the distance separating the first (10) and the second (12) electrode structures.