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The point of this publication is that on substrates with high electromechanical coupling metal elements (IDT, short-circuited gratings etc.) create very important sources of loss. By changing to open-circuited gratings (with corresponding change in gratings period) the achievable values of Q-factor (Q) reach several thousand at about 1 GHz in single port resonators. Etching grooves and removing metal...
Paraxial coupled mode equations (paraxial COM equations or 2D COM equations) are able to characterize the transverse mode profiles in SAW grating waveguides [1], [2], [3]. The paraxial COM equations are applied to the characterization of the orthogonal transverse modes propagating in a synchronous temperature compensated SAW (TCSAW) piston mode waveguide. The solutions indicate that the number of...
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