High frequency piezoelectric resonator

Details High frequency piezoelectric resonator High frequency piezoelectric resonator

H - Electricity

04

R

H04R 17/10 (2006.01) B06B 1/06 (2006.01) H03H 9/56 (2006.01)

Patent

CA 2329325

Disclosed is a piezoelectric resonator that has a piezoelectric plate that has formed thereon a pair of main electrodes and has formed thereon a second electrode surrounding the peripheral edge of the main electrode with a gap being provided between the second electrode and a peripheral edge of the main electrode. The material of the main electrode and the material of the second electrode are differentiated from each other. As the material of the second electrode there is used a material the density of that is lower than the material of the main electrode. With this construction, there is obtained means for suppressing the occurrence of spurious due to an inharmonic mode generating in the high frequency piezoelectric resonator.

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