Piezoelectric resonator device of the tuning fork type

Details Piezoelectric resonator device of the tuning fork type Piezoelectric resonator device of the tuning fork type

1989-11-03

1992-10-27

Laroche, Eugene R.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333200, 310370, H03H 921

Patent

active

051593017

ABSTRACT:
Disclosed is a piezoelectric resonator device. This piezoelectric resonator device comprises a piezoelectric substrate having an almost rectangular plane shape. The piezoelectric substrate is provided with a slit extending to the inside from one edge of the piezoelectric substrate, for forming a tuning fork portion, a pair of slits for separating the tuning fork portion, spaced apart from the slit forming a tuning fork portion by a predetermined distance on both sides of the slit forming the tuning fork portion, and approximately parallel with the slit forming a tuning fork portion. Vibrating electrodes are formed on both major surfaces of the piezoelectric substrate at a piezoelectric vibrating portion, between the slits separating the tuning fork portion from non-vibrating portions of the substrate.

REFERENCES:
patent: 4421621 (1983-12-01), Fujii et al.

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