Abstract
The propagation characteristics of the longitudinal leaky surface wave propagating on a La3Ga5SiO14 substrate were theoretically investigated for all cuts and propagation directions. The results of temperature coefficient of delay (TCD), electro-mechanical coupling constant (K2) and phase velocity were displayed on contour maps. Cuts with zero TCD were obtained at Euler's angle's of (20°,θ,ψ) and (30°,θ,ψ). Temperature dependence of fractional time delay (Δτ/τ) on (90°,90°,0°)-cut changes only by 18.5 ppm from -30°C to 110°C. This cut has very good temperature characteristics.
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