NDLI: Fully-integrated low-voltage high-efficiency CMOS rectifier for wirelessly powered devices

Content Provider	IEEE Xplore Digital Library
Author	Hashemi, S. Sawan, M. Savaria, Y.
Copyright Year	2009
Description	Author affiliation: Polystim Neurotechnologies Laboratory, Electrical Engineering Department, Ecole Polytechnique de Montreal, Montreal, Canada (Hashemi, S.; Sawan, M.; Savaria, Y.)
Abstract	We present in this paper a new full-wave CMOS rectifier topology. It uses bootstrapped capacitors to reduce the effective threshold voltage of selected MOS switches. It achieves a significant increase in overall power efficiency and low voltage-drop. The structure does not require complex circuit design. The highest voltages available in the circuit are used to drive the gates of selected transistors in order to reduce the leakages and to lower their channel on-resistance, while having high transconductance. The proposed rectifier was implemented using the standard TSMC 0.18 μm CMOS process and then characterized with the SpectreS simulator. When connected to a source of 3.3 V nominal peak amplitude, it allows improving the power efficiency by 11%. For low source voltages (0.8 V peak), the average output voltage improvement is up to 210% over previously published results. The circuit was laid out and reported post-layout simulation results were found to be in good agreement with schematics-based simulations.
Starting Page	1
Ending Page	4
File Size	177994
Page Count	4
File Format	PDF
ISBN	9781424445738
DOI	10.1109/NEWCAS.2009.5290415
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-28
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rectifiers Circuit simulation Low voltage Circuit topology MOS capacitors Threshold voltage Switches Circuit synthesis Transconductance CMOS process Bootstrapping technique Power Efficiency Low-Voltage Devices
Content Type	Text
Resource Type	Article

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