Surface acoustic wave device having a langasite single crystal s

Details Surface acoustic wave device having a langasite single crystal s Surface acoustic wave device having a langasite single crystal s

1998-08-06

2000-12-19

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H03H 915

Patent

active

061630993

ABSTRACT:
A surface acoustic wave device includes a piezoelectric substrate made of a Langasite single crystal and at least one interdigital transducer including a pair of comb-shaped electrodes which are interdigitated with each other and are in contact with the piezoelectric substrate. The piezoelectric substrate has a Euler angle of approximately (0.degree., 130.degree. to 170.degree., 23.degree. to 30.degree.), whereby the surface acoustic wave device has an excellent TCD and also has a large K.sup.2 value.

REFERENCES:
patent: 4567393 (1986-01-01), Asai et al.
patent: 5432392 (1995-07-01), Kadota et al.
patent: 5446330 (1995-08-01), Eda et al.
patent: 5917265 (1999-06-01), Naumenko et al.
patent: 6005325 (1999-12-01), Inoue et al.

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