Decoupling effect of multi-stepped bi-mesa AT-cut quartz resonators

In this paper, we calculated the mode-coupling characteristics of multi-stepped bi-mesa resonators and compared them with beveled resonators. Calculation results showed that increasing the number of mesa steps reduced coupling between the thickness-shear and thickness-flexure modes. These results indicate that the multi-stepped bi-mesa resonator has a good mode-decoupling effect, and its performance characteristics approach those of the beveled resonator.

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