title: Q values of longitudinal leaky Saws propagating on rotated Y-cut LN substrates along the perpendicular to the X axis.
abstract: Longitudinal leaky SAWs (LLSAWs), which can be excited in a thick aluminum (A1) grating on a rotated Y-cut lithium-niobate substrate, were analyzed in a simulation that combined both FEM and BEM. The Q-value dependence of an LLSAW on the rotated angle and the Al-grating thickness was clear. The simulation results were confirmed experimentally. These SAWs have potential applications in high-frequency SAW devices because their velocities range from 6100 to 6500 m/s and their optimum Q values are theoretically larger than 4000.
authors.affiliation: Communication Device Research Department, Central Research Laboratory, Hitachi, Ltd., Kokubunji-Shi, Tokyo, Japan 1858601. isobe@crl.hitachi.co.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Isobe
authors.forename: Mitsutaka
authors.initials: M
authors.lastname: Hikita
authors.forename: Kengo
authors.initials: K
authors.lastname: Asai