The coupling-of-modes approach to the analysis of STW devices. II

V L Strashilov; K D Djordjev; V M Yantchev

doi:10.1109/58.808875

The coupling-of-modes approach to the analysis of STW devices. II

IEEE Trans Ultrason Ferroelectr Freq Control. 1999;46(6):1512-7. doi: 10.1109/58.808875.

Authors

V L Strashilov¹, K D Djordjev, V M Yantchev

Affiliation

¹ Dept. of Solid State Phys. and Microelectron., Sofia Univ.

PMID: 18244348
DOI: 10.1109/58.808875

Abstract

For pt. I see ibid., vol. 44, no. 3, p. 652-7 (1997). The method for analyzing surface transverse wave (STW) devices by using a coupling-of-modes (COM) formalism has been completed, covering the STW electromechanical coupling coefficient (ECC). An ECC analytical formula has been derived by fitting numerical results from STW effective permittivity analysis. The ECC exhibits frequency and mass-loading variation. Using this new result, a satisfactory agreement with available experimental frequency characteristics of STW two-port quartz resonators has been achieved, without the necessity of additional experimental information. In its present form, the method is self-consistent and applicable to arbitrary STW layouts.