Resonator having a bar designed to vibrate in one extension mode

Details Resonator having a bar designed to vibrate in one extension mode Resonator having a bar designed to vibrate in one extension mode

1991-05-06

1992-10-06

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310346, 310368, H01L 4108

Patent

active

051534789

ABSTRACT:
A resonator has a parallelepipedal bar of a piezoelectric material designed to vibrate in an extension mode, and suspension means of said bar which form a single, integral part with the latter and which are only connected to one of its lateral faces. This arrangement makes it possible to reduce the number of parasitic vibration modes which could couple to the main mode as well as coupling between these modes, and hence variations as a function of the temperature in the characteristics of the resonator, notably in its quality factor.

REFERENCES:
patent: 1954238 (1934-04-01), Cady
patent: 3906260 (1975-09-01), Oguchi
patent: 4065684 (1977-12-01), Hermann et al.
patent: 4608510 (1986-08-01), Dinger et al.
patent: 4926086 (1990-05-01), Bourgeois et al.
French Search Report in related French Application No. 90 05971.

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