Surface acoustic wave device having apodized transducer provided

Details Surface acoustic wave device having apodized transducer provided Surface acoustic wave device having apodized transducer provided

1988-11-04

1990-04-17

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310313B, 333154, H01L 4108

Patent

active

049183494

ABSTRACT:
A surface acoustic wave device characterized in that in addition to linear first bus-bar electrodes which connect in alignment the edges of the same potential electrodes of interdigital electrodes, second bus-bar electrodes are provided which connect the same potential electrodes in the vicinity of the overlapping positions. Also disclosed is a surface acoustic wave device characterized in that the metalized ratio g/p, which is the ratio of the width of an electrode and the intercentral distance between the adjacent electrodes in an irregular pitch electrode group, is varied between 0.1 to 0.4 or between 0.6 to 0.9.

REFERENCES:
patent: 4160219 (1979-07-01), Kuny
patent: 4160963 (1979-07-01), Hays, Jr.
patent: 4477784 (1984-10-01), Maerfeld et al.

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