Surface acoustic wave devices

Details Surface acoustic wave devices Surface acoustic wave devices

1979-05-24

1981-01-27

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including elastic surface wave propagation means

310313R, 333195, H03H 925, H03H 942, H01L 4118

Patent

active

042478359

ABSTRACT:
A surface acoustic wave device comprises a quartz substrate having a flat surface carrying one or more transducers for launching and receiving surface acoustic waves along a track in the flat surface. In this invention the flat surface lies in a plane rotated about a Y axis by plus or minus 41.degree. to 47.degree. from the Z plane and the track is aligned 61.degree. to 67.degree. from the Y axis.

REFERENCES:
patent: 3818382 (1974-06-01), Holland et al.
patent: 3995240 (1976-11-01), Kerbel
Schulz et al.-"Temperature Dependence of Surface Acoustic Wave Velocity on a Quartz", Journal of Applied Physics, Jun. 1970, pp. 2755-2765.

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