Surface acoustic wave device

Details Surface acoustic wave device Surface acoustic wave device

1981-03-18

1983-06-14

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including elastic surface wave propagation means

310313R, 333194, H03H 9145, H03H 942

Patent

active

043886000

ABSTRACT:
A surface acoustic wave device includes a piezoelectric substrate having opposite flat surfaces. On one surface of the substrate, there are provided launching transducer for launching acoustic waves and receiving transducer for receiving the launched acoustic waves. On the other surface of the substrate, there are provided a plurality of grooves aligned in an angled relation with the direction of propagation of the acoustic waves. The grooves are divided into two or more groups in which the depth of the grooves in one group is different from that in any other group.

REFERENCES:
patent: 3887887 (1975-06-01), Wagers et al.
patent: 3931598 (1976-01-01), Bongianni
patent: 4012650 (1977-03-01), Pratt et al.

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