ACOUSTIC WAVE DEVICE

Abstract: an acoustic wave device includes a piezoelectric layer, first and second comb-shaped electrodes respectively including first and second electrode fingers, and a third electrode including third electrode fingers. the first comb-shaped electrode is connected to an input potential. the second comb-shaped electrode is connected to an output potential. the third electrode is connected to a potential different from the first and second comb-shaped electrodes. each of the third electrode fingers is arranged alongside the first and second electrode fingers. a third busbar interconnects adjacent third electrode fingers. a third electrode finger is between first and second electrode fingers closest to each other. at least one set of electrode fingers selected from the first, second, and third electrode fingers, includes two or more consecutive electrode fingers in the orthogonal-to-electrode-finger direction.

Inventor(s): Sho NAGATOMO, Katsuya DAIMON

CPC Classification: H03H9/132 (IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (measuring, testing ; arrangements for producing a reverberation or echo sound ; impedance networks or resonators consisting of distributed impedances, e.g. of the waveguide type, ; control of amplification, e.g. bandwidth control of amplifiers, ; tuning resonant circuits, e.g. tuning coupled resonant circuits, ; networks for modifying the frequency characteristics of communication systems ))

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