Piezoelectric vibrator ladder-type filter using piezoeletric vibrator and double-mode piezolectric filter
| Autor: | Yukinori Sasaki, Kuniaki Matsushita, Kazunari Nishihara, Takeda Katsu, Katsunori Moritoki, Tetsuo Kawasaki, Tetsuya Furihata, Tetsuro Shimamura |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Acoustics and Ultrasonics Acoustics Rotation Vibrator (mechanical) Piezoelectricity Vibration chemistry.chemical_compound Arts and Humanities (miscellaneous) chemistry Filter (video) Lithium tantalate Electrode Physics::Atomic and Molecular Clusters Physics::Chemical Physics Single crystal |
| Zdroj: | The Journal of the Acoustical Society of America. 120:22 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.2227677 |
| Popis: | A piezoelectric vibrator which uses lithium tantalate as a piezoelectric material and of which main vibration is thickness shear vibration. The thickness direction of the vibrator forms angle of 0°±5° to the X-axis of a single crystal. The longitudinal direction of vibrator lies, with the X-axis used as a rotation axis, in direction n +57°±2° clockwise from the Y-axis of the single crystal. A ratio L/H of the length L of the vibrator to the thickness H is not less than 15. A ratio Le/H of the length Le of the exciting electrode to the thickness H of the vibrator element portion is 3–6. Accordingly, a vibrator having improved temperature characteristics and a large Q is realized. |
| Databáze: | OpenAIRE |
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