Details

Autor(en) / Beteiligte

• Huang, Yulin
• Bao, Jingfu
• Li, Xinyi
• Zhang, Benfeng
• Qiu, Luyan
• Omori, Tatsuya
• Hashimoto, Ken-Ya

Titel

Analysis of SAW Scattering With Discontinuous Periodic Gratings Using Travelling Wave Excitation and Hierarchical Cascading Technique

Ist Teil von

• IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 2019-07, Vol.66 (7), p.1255-1263

Ort / Verlag

United States: IEEE

Erscheinungsjahr

2019

Quelle

IEEE/IET Electronic Library

Beschreibungen/Notizen

• This paper proposes a technique to analyze surface acoustic wave (SAW) scattering at discontinuity in grating structures using the hierarchical cascading technique. The traveling wave excitation is applied to generate a specific SAW mode. Then the displacement distribution is obtained for the passive regions. The incident, reflected, and transmitted components are selectively evaluated by the Fourier transform so as to determine the scattering coefficients at the discontinuity. Rayleigh SAWs on the SiO 2 /128°YX-LiNbO 3 structure and SH SAWs on the 42°YX-LiTaO 3 structure are used as examples, and the behavior of two kinds of discontinuity are analyzed, and the obtained results are compared with those obtained by the COM model.