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

研究成果: Conference article査読

2 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)109-113
ページ数5
ジャーナルProceedings of the IEEE Ultrasonics Symposium
1
出版ステータスPublished - 1994 12 1
イベントProceedings of the 1994 IEEE Ultrasonics Symposium. Part 1 (of 3) - Cannes, Fr
継続期間: 1994 11 11994 11 4

ASJC Scopus subject areas

  • 工学(全般)

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