High frequency piezoelectric resonator

Details High frequency piezoelectric resonator High frequency piezoelectric resonator

1979-11-02

1984-05-29

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310344, 310368, 310346, H01L 4108

Patent

active

044517548

ABSTRACT:
The invention provides a piezoelectric bar resonator of small dimensions operating in the thickness shear mode and employing a minimum of separate and distinct elements. The resonating element 1 and its support 2 are blanked from a thin slab of piezoelectric material in a manner to provide a single piece of which the central portion forms the bar resonator and the peripheral portion constitutes a frame-work support. The two portions remain attached at at least one end of the bar. Planar or flattened cap type cover members 8 are fixed to frame 2. The invention may be applied where piezoelectric bar resonators of extremely small dimensions are required.

REFERENCES:
patent: 3339091 (1967-08-01), Hammond et al.
patent: 3617780 (1971-11-01), Benjaminson
patent: 3745385 (1973-07-01), Nakajima et al.
patent: 4035674 (1977-07-01), Oguchi et al.
patent: 4216462 (1980-08-01), Engdahl

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