Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1994-02-17
1994-11-29
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310360, 374117, H01L 4108
Patent
active
053693272
ABSTRACT:
For surface acoustic wave devices temperature-compensated piezoelectric crystal elements with one or more planar faces are used. An improvement in temperature stability may be expected if the crystal element is made from GaPO.sub.4 and the planar face is defined by Euler angles .lambda. in the range of 0.degree., .mu. in the range of 40.degree. to 75.degree., i.e. preferably 50.degree. to 60.degree., and .theta. in the range of 0.degree..
REFERENCES:
patent: 4026994 (1977-05-01), Tashiro et al.
patent: 4109172 (1978-08-01), O'Connell
patent: 4324773 (1982-04-01), Chai et al.
patent: 4382840 (1983-05-01), Chai et al.
patent: 4481069 (1984-11-01), Chai et al.
patent: 4554136 (1985-11-01), Chai et al.
patent: 4559208 (1985-12-01), Chai et al.
patent: 4578146 (1986-03-01), Chai et al.
patent: 4992694 (1991-02-01), Gunter et al.
patent: 5275697 (1994-01-01), Philippot et al.
Krempl Peter W.
Wallnofer Wolfgang
AVL Gesellschaft Fur Verbrennungskraftmaschinen und Messtechnik
Budd Mark O.
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