Title :
Modes in s.a.w. grating resonators
Author_Institution :
Massachusetts Institute of Technology, Research Laboratory of Electronics, Department of Electrical Engineering & Computer Science, Cambridge, USA
Abstract :
It is shown that s.a.w. gratings on the surface of an isotropic medium may support modes that are confined underneath the grating. The 3-dimensional resonant-mode patterns are derived for the Rayleigh wave in a high-Q-factor resonator consisting of two gratings separated by ¿/2, where ¿ is the grating periodicity, in the limit when the grating width is large compared with a wavelength. The resonance frequencies of the different modes are presented.
Keywords :
acoustic surface wave devices; crystal resonators; 3 dimensional resonant mode patterns; Rayleigh wave; SAW grating resonators; high Q-factor resonator; modes; resonance frequencies;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19770009
