Surface acoustic wave resonator device

Details Surface acoustic wave resonator device Surface acoustic wave resonator device

H - Electricity

01

P

333/89, 349/59.1

H01P 7/00 (2006.01) H03H 9/25 (2006.01) H03H 9/145 (2006.01)

Patent

CA 1180436

SURFACE ACOUSTIC WAVE RESONATOR DEVICE ABSTRACT OF THE DISCLOSURE A surface acoustic wave resonator device including a transducer and grating reflectors having an aperture length, wherein the transducer, which is disposed on a piezoelectric substrate, includes a plurality of interdigital transducers connected to each other in series and aligned to form surface acoustic wave propagation paths parallel to each other, the grating reflectors are disposed on opposite sides of the transducer on the piezoelectric sub- strate, the aperture length of the grating reflectors extending at least the width of said surface acoustic wave propagation paths and preferably being substan- tially the same effective length as that of the transducer.

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