Peculiarities of Microwave Lamb Wave Excitation in Composite SAW Resonator Based on Diamond Substrate
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2020-07-01 |
| Authors | Г. М. Квашнин, B. P. Sorokin, С. И. Бурков |
| Institutions | Technological Institute for Superhard and Novel Carbon Materials, Siberian Federal University |
| Citations | 2 |
Abstract
Section titled “Abstract”We study in detail both experimentally and theoretically Lamb-like wave excitation up to 7.3 GHz in the piezoelectric layered structures “Me-IDT/AlN/(100) diamond” ( <tex xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>$\text{Me} =\text{Pt}$</tex> , Al) configured as a SAW resonator. Theoretical investigation identifying Lamb wave types by Finite Element Modeling as well as by direct solution of the characteristic equations has been fulfilled. Resonance curves for Lamb-like waves have a higher quality factor <tex xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>$Q$</tex> compared to surface acoustic waves propagating on the same substrates. We observed experimentally an unusual effect of a significant increasing in <tex xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>$Q$</tex> -factor of Lamb wave resonance curves with frequency, from a value of 760 at 1.5 GHz to 3,400 at ∼7 GHz. It was shown that the peculiarities of Lamb wave excitation were closely connected with IDT diffraction effects.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2020 - Excitation of surface acoustic waves and Lamb waves on microwave band in a piezoelectric layered structure based on diamond