Piezoelectric resonator and method of fabricating the same

Details Piezoelectric resonator and method of fabricating the same Piezoelectric resonator and method of fabricating the same

1991-05-02

1993-03-09

Dzierzynski, Paul M.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333188, 333192, 310367, H03H 900

Patent

active

051929252

ABSTRACT:
A piezoelectric resonator which comprises a piezoelectric resonance element in which electrodes are formed on a pair of side surfaces, which are opposed to each other, of a piezoelectric substrate. The electrodes are opposed to each other while being separated by the piezoelectric substrate in the center of the piezoelectric substrate to form a vibrating portion of an energy-trapped type utilizing a thickness shear vibration mode in the center of the piezoelectric substrate. Spacers are respectively fixed to the side surfaces of the piezoelectric substrate with gaps being provided between the spacers and the above-mentioned vibrating portion, and a pair of cover sheets are respectively affixed to both major surfaces of a structure comprising the spacers and the piezoelectric resonance element so as to form gaps on top of and beneath the vibrating portion in the piezoelectric resonance element.

REFERENCES:
patent: 3836877 (1974-09-01), Guntersdorfer et al.

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