Scattering loss of S.A.W. resonators
Abstract
An analysis is presented of the bulk-wave scattering loss in a high-Q SAW cavity. The resonator is formed of two uniform grating sections each in cascade. Forward and backward Rayleigh waves propagating over grooves couple to each other and scatter into the bulk. The finite length of the resonator and the discontinuity in the grating cause scattering into the bulk shear waves and compression waves. The theoretical analysis here outlined is applied to SAW resonators with LiNbO3 as the acoustic medium.
- Publication:
-
Electronics Letters
- Pub Date:
- April 1976
- DOI:
- 10.1049/el:19760166
- Bibcode:
- 1976ElL....12..214H
- Keywords:
-
- Q Factors;
- Rayleigh Waves;
- Resonators;
- Surface Acoustic Wave Devices;
- Wave Scattering;
- Compression Waves;
- Crystal Oscillators;
- Energy Dissipation;
- Gratings (Spectra);
- Lithium Niobates;
- S Waves;
- Electronics and Electrical Engineering