Modal Analysis of SAW Convolver
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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The gap-coupled acoustoelectric convolver developed at Lincoln Laboratory is a surface-acoustic-wave SAW device consisting of a LiNbO3 delay line and a silicon strip supported on a series of spacer rails or posts which have been ion-beam etched into the LiNbO3 surface. The siliconair-gapLiNbO3 structure forms an over-moded acoustic waveguide. A theoretical model has been developed which analyzes the perturbing effect of rails and predicts the mode structure and beating phenomena between modes. The scattering by support posts is also analyzed.
- Line, Surface and Bulk Acoustic Wave Devices