Saw device

Details Saw device Saw device

H - Electricity

03

H

356/200, 349/59.

H03H 3/10 (2006.01) H03H 9/02 (2006.01) H03H 9/05 (2006.01)

Patent

CA 1286024

Abstract Techniques for adjusting the surface acoustic wave velocity of a packaged SAW device are described. A first technique involves depositing a film from a cover of the devices onto a surface wave propagating surface thereby providing a localized region on said surface where the acoustic properties and, hence, the velocity characteristics of the surface wave propagating surface are altered. An alternate embodiment of a pair of beams are directed through a transparent cover and converge on the surface wave propaga- ting surface, selectively removing a portion of said surface to provide a localized alteration in the acoustic properties of the surface wave propagating surface.

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