Abstract：
:We studied thickness-shear and thickness-twist vibrations of a monolithic, two-pole crystal filter made from a plate of AT-cut quartz. The scalar differential equations derived by Tiersten and Smythe for electroded and unelectroded quartz plates were employed which are valid for both the fundamental and the overtone modes. Exact solutions for the free vibration resonant frequencies and modes were obtained from the equations. For a structurally symmetric filter, the modes can be separated into symmetric and antisymmetric ones. Trapped modes with vibrations mainly under the electrodes were found. The effect of the distance between the two pairs of electrodes was examined.
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Zhao Z,Qian Z,Wang B,Yang Jdoi
10.1016/j.ultras.2015.01.003subject
Has Abstractpub_date
2015-04-01 00:00:00pages
1-5eissn
0041-624Xissn
1874-9968pii
S0041-624X(15)00005-0journal_volume
58pub_type
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