Single mode resonator and method

Details Single mode resonator and method Single mode resonator and method

1991-11-04

1994-02-08

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310321, 310367, 310370, H01L 4108

Patent

active

052851273

ABSTRACT:
Mechanical resonator and method in which electrodes or other driving and sensing elements are energized with an AC voltage to produce oscillations in a tine. The electrodes or other driving and sensing elements have at least two parameters which are adjusted to selectively enhance oscillations in one mode, e.g. the fundamental mode, and/or to selectively suppress oscillations in one or more other modes, e.g. an overtone mode. The parameters which can be adjusted include the endpoints of electrodes, the width of a gap between adjacent ends of electrodes, and corresponding features of other driving and sensing elements.

REFERENCES:
patent: 1977169 (1934-10-01), Cady
patent: 3946257 (1976-03-01), Kawamura
patent: 4372173 (1983-02-01), EerNisse et al.
patent: 4415827 (1983-11-01), Chuang
patent: 4469979 (1984-09-01), Chuang
patent: 4757228 (1988-07-01), Kalinoski et al.
patent: 4868447 (1989-09-01), Lee
patent: 4929860 (1990-05-01), Hulsing, II et al.
Soderkvist, A Mathematical Analysis of Flexural Vibrations of Piezoelectric Beams with Applications to Angular Rate Sensors, Uppsala University, pp. 27-43.

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