Properties of pseudo surface acoustic wave on (−74°)YX cut quartz

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Properties of pseudo surface acoustic wave on (−74°)YX cut quartz

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Pseudo surface acoustic wave properties on (−74°)YX cut quartz have been calculated and measured. It was found that this cut belongs to the minimal diffraction cuts, and the reflection coefficient of a single aluminium electrode is about four times larger compared to that of the ST cut. Temperature compensation exists if, for a given aluminium layer thickness, a proper free surface length is used. This cut is free of spurious transverse modes.

Inspec keywords: surface acoustic waves; quartz

Other keywords: free surface length; Al; temperature compensation; pseudo surface acoustic wave properties; reflection coefficient; SiO2; YX-cut quartz; aluminium electrode; spurious transverse mode

Subjects: Acoustic wave devices; Mechanical and acoustical properties of solid surfaces and interfaces

References

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