Piezoelectric resonator

Details Piezoelectric resonator Piezoelectric resonator

1979-01-15

1981-03-17

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310371, 333222, 333227, H03H 913, H03H 915, H01P 706

Patent

active

042570204

ABSTRACT:
A piezoelectric resonator comprises a crystal having an outer peripheral portion connected to a central portion by an intermediate zone which is short in the radial direction, is hollowed out over its major part and has at least two connector bridges between the outer and central portions. Electrodes are arranged facing one of the main portions of the crystal which then forms the vibrating portion of the resonator. The non-vibrating main portion serves as a support for the crystal. The surfaces of the connector bridges are continuous with the corresponding surfaces of the vibrating portion.

REFERENCES:
patent: Re26707 (1969-11-01), Cutler et al.
patent: 3339091 (1967-08-01), Hammond et al.
patent: 3745385 (1973-07-01), Nakajima et al.
patent: 4135108 (1979-01-01), Besson

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