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A Coupling-Of-Modes Model For Saw Transducers With Arbitrary Reflectivity Weighting, Benjamin P. Abbott Jan 1989

A Coupling-Of-Modes Model For Saw Transducers With Arbitrary Reflectivity Weighting, Benjamin P. Abbott

Retrospective Theses and Dissertations

An accurate and numerically efficient model for SAW devices incorporating transducers with non-uniformly weighted internal reflections has been developed. The model describes each of the device's transducers using a three port characterization (two acoustic ports and one electric port). These three port descriptions are combined to obtain the complete device's description.

The three port description of a transducer is obtained by representing the response of the non-uniform transducer as that of a set of cascaded uniform sections. The three port solutions for a uniform section of transducer are presented as the results of a coupling-of-modes (COM) analysis. These solutions include …