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Mitsutaka HIKITA Atsushi ISOBE Atsushi SUMIOKA Naoki MATSUURA Katsunori OKAZAKI
Interdigital transducers (IDTs) with leaky-SAWs propagating on 36 YX-LiTaO3, and 41 and 64 YX-LiNbO3 were theoretically analyzed, providing a new equivalent circuit. This equivalent circuit included attenuation constant due to leakage as well as conductance caused by bulkwave radiation. All circuit parameters were derived by solving integral equations. Fundamental experiments showed fairly good agreement between theoretical and experimental results, which gave very accurate design tools for leaky-SAW devices.