Abstract
AbstractA theoretical method is described for determining equivalent circuit parameters for metallic gratings on arbitrary piezoelectric substrates. In this paper, to consider an energy storage effect, we adopt the equivalent circuit model proposed by Li et al. The finite‐element method is used to calculate the upper and lower cutoff frequencies of the stop band for metallic gratings of infinite periodic structure, and circuit parameters are determined from these values. Therefore, in this equivalent circuit, all the effects of piezoelectric perturbation, mechanical perturbation, and energy storage are taken into account. To show the validity and usefulness of this approach, for aluminum strips on some useful piezoelectric substrates (LiNbO3, quartz, LiTaO3, Li2B4O7), equivalent circuit parameters for each of the metallic gratings are determined and SAW reflection characteristics are computed. Result show that for the Li2B4O7 substrate, the reflection magnitude per strip is large and the influence of the change of strip thickness on the center frequency shift is small.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Electronics and Communications in Japan (Part II: Electronics)
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
