Unidirectional surface-acoustic-wave transducers with a ZnO film on glass substrate

A unidirectional surface-acoustic-wave transducer with a sputtered ZnO film on a glass substrate is presented, consisting of interdigital electrodes and a plate electrode on both sides of the film. Experiments are in good agreement with the equivalent-network approach, which is similar to Smith's networks for the normal interdigital transducer.