Patent ID: 6054794
Filing Date: 2000-04-25
Classification: H03H

Abstract:
A lanthanum gallium niobate (langanite) substrate comprising a planar surface formed from a cut of the substrate, wherein a direction of propagation of a wave along the planar surface of the substrate is defined to be along an X' axis, a Z' axis is defined as being normal to the propagation surface, and a Y' axis is defined to be along the propagation surface and perpendicular to the X' axis, and wherein a crystal orientation for the substrate is defined by crystal axes X, Y, and Z, having a relative orientation to X', Y', and Z' substrate axes defined by Euler angles .PHI. and .THETA., with .PHI. having a value ranging from -5.degree. to 5.degree., and .theta. having a value ranging from 130.degree. to 150.degree..