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Electronics 2019, 8(1), 66;

An Efficient CMOS Dual Switch Rectifier for Piezoelectric Energy-Harvesting Circuits

Material Synthesis & Characterizations (MSC) Lab-Electronics Division, Department of Physics, Fatima Jinnah Women University (FJWU), The Mall, Rawalpindi 46000, Pakistan
Department of Electrical & computer Engineering, COMSATS University, Wah Cantt 47040, Pakistan
Computer Engineering Department, College of Computer and Information Sciences, King Saud University, Riyadh 11543, Saudi Arabia
Department of Electronics and Radio Engineering, Kyung Hee University, Yongin 17104, Korea
Author to whom correspondence should be addressed.
Received: 28 November 2018 / Revised: 29 December 2018 / Accepted: 2 January 2019 / Published: 7 January 2019
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In this research work, we investigated a dual switch (DS) active rectifier for the piezoelectric (PE) energy scavenging system. In the proposed DS active rectifier configuration, two extra switches are shunted across the PE transducer which helps the PE transducer’s capacitor in charging and discharging which results in maximum power extraction from the PE transducer. Moreover, in the proposed rectifier configuration comparator controlled active diodes are used instead of conventional/passive diodes to minimize the threshold voltage V T H drop. The proposed DS active rectifier design is fabricated in a 1-poly 6-metal 180-nm standard CMOS process. The simulation and measured results of the proposed DS active rectifier design have the better power conversion efficiency (PCE) of 91.5 %, which definitely helps in extracting more power than the conventional full bridge rectifier (FBR). View Full-Text
Keywords: piezoelectric transducer; active rectifier; energy harvesting; full bridge rectifier piezoelectric transducer; active rectifier; energy harvesting; full bridge rectifier

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Ud Din, A.; Kamran, M.; Mahmood, W.; Aurangzeb, K.; Saud Altamrah, A.; Lee, J.-W. An Efficient CMOS Dual Switch Rectifier for Piezoelectric Energy-Harvesting Circuits. Electronics 2019, 8, 66.

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