Resonator vibrating in a thickness-shear mode

Details Resonator vibrating in a thickness-shear mode Resonator vibrating in a thickness-shear mode

1985-02-28

1986-10-21

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310320, 310368, H01L 4108

Patent

active

046187987

ABSTRACT:
A resonator (1) is described for vibrating in a thickness-shear mode and has auxiliary electrodes (7f, 8d) between the zone of its main excitation electrodes (3, 4) and the zone of its connection terminals (5, 6) to generate an auxiliary vibration in opposition of phase with respect to the main vibration.
The presence of the auxiliary electrodes (7f, 8d) improves notably the quality factor of the resonator.

REFERENCES:
patent: 2635199 (1953-04-01), Wolfskill
patent: 4149102 (1979-04-01), Kellen
patent: 4184095 (1980-01-01), Stacchiotti et al.
patent: 4350918 (1982-09-01), Sato
patent: 4379244 (1983-04-01), Dinger
patent: 4443728 (1984-04-01), Kudo

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