SURFACE ACOUSTIC WAVE DEVICES HAVING REDUCED SIZE

In some embodiments, a surface acoustic wave device can include a piezoelectric substrate and an interdigital transducer electrode implemented on a surface of the piezoelectric substrate, such that the surface acoustic device supports a surface acoustic wave having a wavelength λ and a phase velocit...

Full description

Saved in:
Bibliographic Details
Main Authors MAKI, Keiichi, NAKAMURA, Hiroyuki, GOTO, Rei, KADOTA, Michio, TANAKA, Shuji
Format Patent
LanguageEnglish
Published 07.12.2023
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
Online AccessGet full text

Cover

More Information
Summary:In some embodiments, a surface acoustic wave device can include a piezoelectric substrate and an interdigital transducer electrode implemented on a surface of the piezoelectric substrate, such that the surface acoustic device supports a surface acoustic wave having a wavelength λ and a phase velocity less than 3,000 m/s with an electromechanical coupling coefficient of at least 9.0. In some embodiments, the phase velocity less than 2,000 m/s, and the surface acoustic wave can include a lowest asymmetry (A0) mode. In some embodiments, such a surface acoustic wave device can be implemented in products such as a radio-frequency filter, a radio-frequency module and a wireless device.
Bibliography:Application Number: US202318203293