Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1994.07b
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- Pages.1283-1285
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- 1994
Electrical Properties of a Three-layered Piezoelectric Ceramic Transducer
3중 적층형 압전 세라믹 트랜스듀서의 전기적 특성
- Lee, Sang-Churl (Dept. of Electrical Eng. Kon-Kuk Univ.) ;
- Jeong, Young-Woo (Dept. of Electrical Eng. Kon-Kuk Univ.) ;
- Yu, Young-Han (Han-Young Technical Junior College) ;
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Han, Deuk-Young
(Dept. of Electrical Eng. Kon-Kuk Univ.)
- Published : 1994.07.21
Abstract
A three-layered piezoelectric ceramic transducer is fabricated with three piezoelectric ceramic disk transducers and two sheets of thin insulator. Its equvalent circuit is derived from the Mason's model of a thickness-driven piezoelectric transducer. We applied the electric input near its fundamental resonant frequency to the center transducer and connect the output voltages across the left and right transducers in series to the resistor load. Then we investigate the load characteristics at resonant frequencies under various resistor loads and the frequency characteristics near the resonant frequency under no load. Moreover, symbolic expressions for input impedances, voltage ratios, resonant frequencies, and bandwidths have been derived. The values calculated from those symbolic expressions are shown to agree well with the measurement values.
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