Active control of nonlinear piezoelectric effect and its application to 20 dB efficiency improvement of saw elastic convolver

Yasuo Cho, Shin ichi Haitsuka, Michio Kadota

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

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

Original languageEnglish
Pages (from-to)109-113
Number of pages5
JournalProceedings of the IEEE Ultrasonics Symposium
Volume1
Publication statusPublished - 1994 Dec 1
EventProceedings of the 1994 IEEE Ultrasonics Symposium. Part 1 (of 3) - Cannes, Fr
Duration: 1994 Nov 11994 Nov 4

ASJC Scopus subject areas

  • Engineering(all)

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