IDT geometry and crystal cut effects on the frequency-temperature curves of a SAW periodic structure of quartz

Yook Kong Yong, Shigeo Kanna

Research output: Contribution to journalConference articlepeer-review

19 Scopus citations

Abstract

Piezoelectric Lagrangian equations for the frequency-temperature behavior of quartz is presented. A finite element study of these Lagrangian equations is performed for a two-dimensional periodic SAW structure of quartz. Plane strain assumptions are used to enable a two-dimensional analysis of straight crested acoustic waves in the structure. Adaptive finite element meshes are employed to reduce the size of the finite element problem. The frequency-temperature characteristics of the two fundamental SAW modes are compared and contrasted. Numerical results are compared with experimental data for the ST- and K-cut of quartz. The finite element results for the turnover temperature and the 2nd temperature coefficient of the f-t curve as a function of the electrode height are found to compare well with the ST-cut experimental data. Similar numerical results for the change in frequency-temperature characteristics of the K-cut as a function of crystal cut angles phi is also found to be compare well with the experimental data. The experimental data are found to follow the lower band-gap frequency SAW1.

Original languageEnglish (US)
Pages (from-to)223-228
Number of pages6
JournalProceedings of the IEEE Ultrasonics Symposium
Volume1
StatePublished - 1998
EventProceedings of the 1998 International Ultrasonics Symposium - Sendai, Miyagi, Jpn
Duration: Oct 5 1998Oct 8 1998

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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