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Acoustics 08 Paris 4975 The demand for highly coupled high quality acoustic wave devices has generated a strong innovative activity, yielding the investigation of new excitation principles and waveguide structures. In a recent work, we have investigated the interest of periodically poled transducers (PPTs) on single crystal LiNbO 3 Z-cut plates. The PPT simply consists of a periodically poled ferroelectric layer metallized on its two faces for acoutoelectric excitation. In this work, we havedoi:10.1121/1.2934922 fatcat:txek7us3qjbtljghq55er2evfe