Resonator with a low sensitivity to accelerations

Details Resonator with a low sensitivity to accelerations Resonator with a low sensitivity to accelerations

H - Electricity

03

H

331/52, 333/89

H03H 9/17 (2006.01) H03H 9/05 (2006.01)

Patent

CA 1225707

ABSTRACT RESONATOR WITH A LOW SENSITIVITY TO ACCELERATIONS The present invention concerns a piezo-electric resonator with a low sensitivity to accelerations comprising a base (42) with supporting legs (15,16,17,18), a piezo-electric sheet (1) with an adhering electro- de (4,32) on each of its sides, each electrode (4,32) being electrically connected to a conducting leg (15,17), passing through the base (42), and electrically isolated (40,41) from it. According to the invention, the sheet of the piezo-electric material (1) is of a single material and presents an active central zone (3) which produces the volume waves of the resonator, surrounded by a peripheral ring (2) connected to the said central part (3) by 2n bridges (7,8,9,10), where n is a whole number more than or equal to 2, the said bridges (7,8,9,10) defining between the active zone (3) and the peripheral ring (2) a number of slits (11,12,13,14) with widths L, the said piezo-electric sheet (2) being fixed by its peripheral ring (2) to the supporting legs (15,16,17,18), the bridges (7,8,9,10) being placed within an angle 8° and 25° with respect to the ZZ' access of the piezo-electric sheet. 12

464350

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