ACOUSTIC WAVE ELEMENT, DUPLEXER, AND COMMUNICATION MODULE

摘要

An acoustic wave element of the present disclosures has a piezoelectric substrate and an acoustic wave resonator S1 on a main surface of the piezoelectric substrate. The acoustic wave resonator S1 is one being divided into a first IDT electrode and a second IDT electrode which are electrically connected to the first IDT electrode. The first IDT electrode includes a first comb-shaped electrode on the signal input side and a second comb-shaped electrode on the signal output side. The second IDT electrode includes a third comb-shaped electrode on the signal input side and a fourth comb-shaped electrode on the signal output side. The direction of arrangement of the third comb-shaped electrode and the fourth comb-shaped electrode from the third comb-shaped electrode toward the fourth comb-shaped electrode is different from the direction of arrangement from the first comb-shaped electrode toward the second comb-shaped electrode.

主权项

1. An acoustic wave element, comprising:
a piezoelectric substrate; and an acoustic wave resonator on a main surface of the piezoelectric substrate, wherein the acoustic wave resonator is being divided into a first IDT electrode and a second IDT electrode which is electrically connected to the first IDT electrode, the first IDT electrode comprises a first comb-shaped electrode on a signal input side and a second comb-shaped electrode on a signal output side, the second IDT electrode comprises a third comb-shaped electrode on a signal input side and a fourth comb-shaped electrode on a signal output side, and a direction of arrangement from the third comb-shaped electrode toward the fourth comb-shaped electrode is different from a direction of arrangement from the first comb-shaped electrode toward the second comb-shaped electrode.