Design of mechanical band-pass filters with large frequency bands for energy scavenging

In this paper, the design of mechanical band-pass filters to be used in energy scavengers is studied. For such filters an ensemble of cantilever beams is proposed where at the tip of each beam a mass, known as the proof mass, is mounted. It is shown that such an ensemble can be made into a band-pass filter with a large frequency band when dimensions of the beams and masses of the proof masses are chosen appropriately. Several systematic procedures for designing mechanical band-pass filters with large frequency bands are given.