Thickness extensional piezoelectric resonator

Details Thickness extensional piezoelectric resonator Thickness extensional piezoelectric resonator

2006-11-29

2008-11-04

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S348000

Reexamination Certificate

active

07446454

ABSTRACT:
An energy-trapping-type thickness extensional piezoelectric resonator using a thickness extensional vibration mode having first and second resonance electrodes formed on portions of the top surface and the bottom surface of a piezoelectric substrate that is polarized in the thickness direction thereof, respectively, in which a portion where the first and second resonance electrodes oppose each other is formed as an energy-trapping-type vibration section, wherein, in order to suppress frequency changes of the thickness extensional vibration mode due to temperature, which is a main response using resonance characteristics, a suppression response having a frequency-temperature-change tendency for suppressing frequency changes of the main response due to temperature is brought into close proximity with the main response.

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International Search Report from corresponding International application dated Jun. 13, 2006.
Written Opinion (and English translation) from corresponding International application dated Jun. 13, 2006.

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