Isotropic acoustic wave substrate

H - Electricity – 03 – H

Patent

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356/200, 349/59.

H03H 3/08 (2006.01) H03H 9/02 (2006.01) H03H 9/145 (2006.01) H03H 9/17 (2006.01)

Patent

CA 1263473

ABSTRACT OF THE DISCLOSURE A surface acoustic wave (SAW) diffraction- effect 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.

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