Inharmonic Overtone Spurious Mode Suppression by Partial Mass-Loading onto the Electrode for Energy-Trapped-Type Thickness-Extensional-Mode Piezoelectric Ceramic Resonators

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概要

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• Experimental studies have been performed on the suppression of the inharmonic overtone responses for realizing piezoelectric ceramic resonators with low resonance impedance compatible with a wide-area electrode(>φ15λ). The circumferential mass-loading onto the electrode is effective for the fabrication of an oscillator with a low oscillation startup voltage, without any jump to spurious frequencies. In addition, this technique results in a wide rejection bandwidth for TV/VCR adjacent-channel sound-carrier-signal traps. This effect (stepped energy-trapping) is observed to arise from the spatial vibration energy distribution dispersion by the additive weighting electrode using optical laser interferometry and finite- element-method analysis.

• Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
• 1998-09-30

著者

• Sugimoto Masanobu

  Tdk Electronic Products Business Group

• Sugimoto Masanobu

  TDK Electronic Products Business Group, Ichikawa, Chiba, 272-8558, Japan

• Yamashita Yoshinari

  TDK Applied Products Development Center, Ichikawa, Chiba, 272-8558, Japan

• Oikawa Yasunobu

  TDK Electronic Products Business Group, Ichikawa, Chiba, 272-8558, Japan

関連論文

• Inharmonic Overtone Spurious Mode Suppression by Partial Mass-Loading onto the Electrode for Energy-Trapped-Type Thickness-Extensional-Mode Piezoelectric Ceramic Resonators

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