Control of nonlinear piezoelectricity and its application to efficiency improvement of surface acoustic wave elastic convolver

Yasuo Cho, Shin Ichi Haitsuka, Michio Kadota

Research output: Contribution to journalArticle

Abstract

The newly discovered effect concerning the enhancement of nonlinear piezoelectricity of lead zirconate titanate (PZT) ceramics by applying a bias electric field to the substrate has enabled more than 20 dB efficiency improvement in a surface acoustic wave (SAW) elastic convolver. Next, a novel biasing method for stabilizing the time variation of convolution output signal with static field and for obtaining a more efficient convolver is proposed. Finally, the temperature dependence of the PZT convolver is also investigated. These results suggest the possibility of fabricating a SAW elastic convolver of which efficiency is higher than that of a SAW monolithic convolver.

Original languageEnglish
Pages (from-to)3031-3034
Number of pages4
JournalJapanese journal of applied physics
Volume33
Issue number5S
DOIs
Publication statusPublished - 1994 May

Keywords

  • Bias
  • Efficiency improvement
  • Elastic convolver
  • Electric field
  • Nonlinear piezoelectricity
  • PZT
  • Surface acoustic wave

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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