Title :
A low voltage CMOS rectifier for wirelessly powered devices
Author :
Li, Qiang ; Zhang, Renyuan ; Huang, Zhangcai ; Inoue, Yasuaki
Author_Institution :
Grad. Sch. of Inf., Production & Syst., Waseda Univ., Kitakyushu, Japan
fDate :
May 30 2010-June 2 2010
Abstract :
This paper presents a low voltage CMOS full-wave rectifier for wirelessly powered devices. By using a simple comparator-controlled switch, the lowest input voltage amplitude can be reduced to 0.7V when using a standard CMOS 0.18μm process. With only one comparator, the proposed design dramatically reduces the production cost. In combination with unbalanced transistor scale, the proposed rectifier can achieve a maximum peak voltage conversion efficiency of more than 93% and power efficiency near to 87%.
Keywords :
CMOS analogue integrated circuits; comparators (circuits); low-power electronics; rectifying circuits; comparator controlled switch; low voltage CMOS full-wave rectifier; lowest input voltage amplitude; maximum peak voltage conversion efficiency; unbalanced transistor scale; wirelessly powered device; Bridge circuits; CMOS process; Costs; Diodes; Low voltage; MOSFETs; Production systems; Radiofrequency identification; Rectifiers; Switches;
Conference_Titel :
Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4244-5308-5
Electronic_ISBN :
978-1-4244-5309-2
DOI :
10.1109/ISCAS.2010.5537419
