Patent ID: 11936365
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An elastic wave device comprising:
a LiNbO3 substrate;
an interdigital transducer electrode disposed on the LiNbO3 substrate;
a dielectric film disposed on the LiNbO3 substrate and covering the interdigital transducer electrode; and
a frequency adjustment film disposed on the dielectric film; wherein
the interdigital transducer electrode includes a main electrode;
when Euler Angles of the LiNbO3 substrate are within a range of about 0°±5°, within a range of about θ±1.5°, within a range of about 0°±10°, a film thickness of the main electrode normalized by a wavelength λ determined in accordance with an electrode finger pitch of the interdigital transducer electrode is denoted T, and a density ratio of the metal of the main electrode to Pt is denoted as r, the film thickness T of the main electrode and θ of the Euler Angles satisfy θ=−0.05°/(T/r−0.04)+31.35°.