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The 0-th shear horizontal (SH0) mode plate wave has an electromechanical coupling factor k2 larger than 50% in a (0°, 120°, 0°) LiNbO3 (LN) plate thinner than 0.1λ, where λ is a pitch of an intergidital transducer (IDT). In the previous study, ultra-wide-band ladder filters composed of cavity type resonators recorded 6 dB bandwidth from 41% to 51% in a digital TV band. However, the structure is fragile,...
This work deals with the possibility to create a high temperature surface acoustic waves (SAW) sensor based on the use of a new piezoelectric material : Ba2TiSi2O8.The wave propagation in the material is at first studied and compared to another material used for harsh environment : LiTaO3. Then a SAW resonator on Ba2TiSi2O8 is designed.
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