PIEZOELECTRIC VIBRATOR AND FILTER USING THE SAME

A piezoelectric vibrator uses aluminum nitride as piezoelectric material and thickness sliding vibration as the primary vibration. A polarization direction of the primary vibration is along the longitudinal direction of its vibrating element. This vibrator eliminates undesired resonance, caused by a...

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Bibliographic Details
Main Author SASAKI, YUKINORI
Format Patent
LanguageEnglish
French
German
Published 07.05.2003
Edition7
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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Summary:A piezoelectric vibrator uses aluminum nitride as piezoelectric material and thickness sliding vibration as the primary vibration. A polarization direction of the primary vibration is along the longitudinal direction of its vibrating element. This vibrator eliminates undesired resonance, caused by a width of the vibrating element, from a vicinity of a resonance frequency of the primary vibration. Vibrating element 1 has width W and thickness H defined as follows: 2.0 ≤ W/H ≤ 4.0 or 4.3 ≤ W/H ≤ 5.7 or 6.2 ≤ W/H ≤ 7.8 or 8.2 ≤ W/H ≤ 9.8.
Bibliography:Application Number: EP20020738645