TY - GEN
T1 - 20dB efficiency increment of surface acoustic wave elastic convolver using actively controlled nonlinear piezoelectric effect
AU - Cho, Yasuo
AU - Haitsuka, Shin ichi
AU - Kadota, Michio
PY - 1994/1/1
Y1 - 1994/1/1
N2 - 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. Finally, the temperature characteristic of PZT convolver is also investigated. These results suggest the possibility of producing a SAW elastic convolver with higher efficiency than that of a SAW monolithic convolver.
AB - 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. Finally, the temperature characteristic of PZT convolver is also investigated. These results suggest the possibility of producing a SAW elastic convolver with higher efficiency than that of a SAW monolithic convolver.
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M3 - Conference contribution
AN - SCOPUS:0028015519
SN - 0780317793
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 1217
EP - 1220
BT - IEEE MTT-S International Microwave Symposium Digest
PB - Publ by IEEE
T2 - Proceedings of the IEEE MTT-S International Microwave Symposium
Y2 - 23 May 1994 through 27 May 1994
ER -