Piezoelectric resonator including oscillation buffer materials

Details Piezoelectric resonator including oscillation buffer materials Piezoelectric resonator including oscillation buffer materials

1996-12-13

1998-06-30

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310312, H01L 4108, H03H 917

Patent

active

057739129

ABSTRACT:
A piezoelectric resonator has oscillating electrodes disposed on opposite major surfaces of a piezoelectric substrate, which oscillating electrodes are arranged so as to extend from respective opposite ends of the piezoelectric substrate to a central portion of the piezoelectric substrate so that the central portions of the oscillating electrodes overlap with each other, with the oscillating substrate sandwiched between the oscillating electrodes. Oscillation buffer materials are disposed on portions of the opposite major surfaces of the piezoelectric substrate, which portions are displaced by the third harmonic oscillation having a frequency which is substantially equal to about three times the resonance frequency of the piezoelectric substrate.

REFERENCES:
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patent: 4356421 (1982-10-01), Shimizu et al.
patent: 4894577 (1990-01-01), Okamoto et al.
patent: 5032755 (1991-07-01), Witte
patent: 5399997 (1995-03-01), Yoshida

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