Title :
Highly efficient CMOS rectifier assisted by symmetric and voltage-boost PV-cell structures for synergistic ambient energy harvesting
Author_Institution :
Dept. of Electron., Tohoku Univ., Sendai, Japan
Abstract :
A highly efficient CMOS rectifier assisted by symmetric PV cells was developed as an example of possible realization of the synergistic ambient energy harvesting concept. In addition, output-voltage-boosted PV cell structures were found to effectively improve the efficiency of this rectifier. As a result, under typical indoor lighting conditions, 30% power conversion efficiency was achieved at -20 dBm of 920 MHz RF input and 100 kΩ loading condition, efficiency 4 times larger than a conventional rectifier without PV assistance.
Keywords :
CMOS integrated circuits; energy harvesting; power conversion; rectifiers; CMOS rectifier; power conversion efficiency; symmetric PV-cell structures; synergistic ambient energy harvesting; voltage-boost PV-cell structures; CMOS integrated circuits; Energy harvesting; Junctions; MOS devices; Rectifiers; Substrates; Voltage measurement; energy harvesting; photovoltaic cell; rectifier;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2013 IEEE
Conference_Location :
San Jose, CA
DOI :
10.1109/CICC.2013.6658515
