Acoustic surface wave devices using Tl.sub.3 TaS.sub.4 and Tl.su

Details Acoustic surface wave devices using Tl.sub.3 TaS.sub.4 and Tl.su Acoustic surface wave devices using Tl.sub.3 TaS.sub.4 and Tl.su

1975-01-10

1976-02-24

Borchelt, Archie R.

Wave transmission lines and networks

Coupling networks

With impedance matching

310 95, 333 72, H03H 926, H03H 930, H01L 4108, H01L 4118

Patent

active

039407179

ABSTRACT:
An acoustic surface wave device is disclosed which comprises a crystal of Tl.sub.3 TaS.sub.4, Tl.sub.3 TaSe.sub.4, or mixtures thereof having at least one surface suitable for the propagation of surface waves, a surface wave generating transducer mounted on the surface, and a surface wave receiving transducer mounted on the surface positioned to receive a surface wave generated by the surface wave generating transducer.
The device transmits surface waves at a low velocity and high coupling efficiency and can be used in a delay line, a filter, an FM discriminator, an oscillator, or other device.

REFERENCES:
patent: 3818382 (1974-06-01), Holland et al.
cermak-Width of the Energy Gap of Some Ternary Thallium Chalcogenides in Collection Czechoslov Chem. Commun Vol. 34, 1969; pp. 3605-3609.

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