Importance

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Abstract

An acoustic wave device includes a piezoelectric layer, a first comb-shaped electrode on the piezoelectric layer, including a first busbar and first electrode fingers, and connected to an input potential, a second comb-shaped electrode on the piezoelectric layer, including a second busbar and second electrode fingers interdigitated with the first electrode fingers, and connected to an output potential, and a reference potential electrode connected to a reference potential and including third electrode fingers on the piezoelectric layer aligned with the first and second electrode fingers, and a connection electrode connecting adjacent third electrode fingers. An order in which a first electrode finger, a second electrode finger, and a third electrode finger are arranged is such that, starting from the first electrode finger, the first electrode finger, the third electrode finger, the second electrode finger, and the third electrode finger define one period.

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First Claim