Surface acoustic wave device

Details Surface acoustic wave device Surface acoustic wave device

H - Electricity

03

H

333/58

H03H 9/64 (2006.01) H03H 9/145 (2006.01)

Patent

CA 1192632

SURFACE ACOUSTIC WAVE DEVICE ABSTRACT This Surface Acoustic Wave (SAW) filter has a tilted, interdigital transducer and a normal interdigital transducer separated from each other on a piezoelectric substrate. An input signal with a large bandwidth is applied to the tilted transducer, while an output signal is obtained from the normal transducer. Guaranteed attenuation can be greatly improved, and ripple in the pass band markedly reduced, by grounding one of the electrodes of the tilted transducer. This electrode is the one containing the longer of the two electrode fingers closest to the normal transducer.

410995

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