| 摘要 |
An acoustic wave element comprising a lithium tantalate substrate having the Euler angles (Õ, ¸, È), a first component Õ satisfying 10°‰¤ Õ ‰¤ 50°; and an electrode disposed on the lithium tantalate substrate and configured to excite a main acoustic wave of wavelength », the electrode having a density Á M satisfying Á M ‰¥ Á Ti where Á Ti represents a density of titanium (Ti), and a thickness h M of the electrode satisfies 0.141 x exp(-0.075Á M )» ‰¤ h M ‰¤ 0.134». Embodiments of the present disclosure minimize a thickness of the electrode and suppress a spurious Rayleigh wave signal. |
