ISOTROPIC ACOUSTIC WAVE SUBSTRATE

摘要

A surface acoustic wave (SAW) diffractioneffect or interference-effect device with a highly isotropic substrate having a high coupling coefficient and low attenuation losses. The use of X-propagating rotated-Y-cut lithium niobate as the SAW substrate, with the Y rotation angle selected at 121 degrees, provides a practically isotropic material, with a high coupling coefficient and relatively low attenuation losses.