Various equivalent circuits for thickness mode piezoelectric transducers

✍ Scribed by Noriyoshi Chubachi; Hiroshi Kamata

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 604 KB
• Volume: 79
• Category: Article
• ISSN: 8756-663X
• DOI: 10.1002/ecjb.4420790606

✦ Synopsis

The equivalent transmission line model originally proposed by Nukiyama [S] and applied to the thickness mode piezoelectric tranadwrs by Kikuchi et al. [6] is reviewed and its characteristics are described. The model is compared with those proposed by Meson [4] and by Krimholz et al. [Z]. The equivalent transmission line model developed by Kikuchi et al. 161 was derived from the fundamental piezoelectric equation and Newton's equation of motion via the Laplace transformation. A new equivalent circuit in a time domain was derived as well. By comparing the equivalent circuit in a time domain with the equivalent transmission line model [6], it was demonstrated that the equivalent transmission line model is a fundamental equivalent circuit that is effective both for analysea in a time domain and for conventional analyses in a frequency domain. It is also demonstrated that, when the simultaneity between electric and acoustic signals is neglected, the equivalent circuits [2, 41 can be derived from the equivalent transmission line model.