Various vibration modes used in ceramic resonators which have been commercialized recently, and they have been mainly used in generating frequencies greater than 10MHz with the 3rd overtone vibration (TE3 mode vibration) and 2nd vibration (TE2 mode vibration) generated by laminating two layers. In the case of the TE2 mode vibration, it is known that it can give the better features for temperature and higher Qm than those of the TE3 mode vibration and there is no problem of a spurious response generated in the TE3 mode vibration. In this study, we simulated the TE3 mode vibration and TE2 mode vibration using the FEMLAB program. PbTiO3-based ceramics were used in this experiment and their standard dimensions were 2.0 ×2.5×0.36 mm and 0.5×1.5×0.2 mm for the each TE3 mode and TE2 mode respectively, which simulation revealed that the TE2 mode generated vibration in a more local area than TE3 mode. Moreover the result for the TE2 mode was analyzed with variables of overlap length/thickness and the width of the element. It was found that a 2.0 ratio of overlap length per thickness was less influenced by a spurious response for the TE2 mode vibration, and it was expected that the TE2 mode vibration would be more dominant rather than other vibrations in samples 0.5 mm width.

Keywords: C.Piezoelectric properties, D.Perovskite, E.Functional application, Simulation