NDLI: A modified cross coupled rectifier based charge pump for energy harvesting using RF to DC conversion

Content Provider	IEEE Xplore Digital Library
Author	Chouhan, S.S. Halonen, K.
Copyright Year	2013
Description	Author affiliation: Dept. of Micro & Nano Sci., Aalto Univ., Espoo, Finland (Chouhan, S.S.; Halonen, K.)
Abstract	This paper presents a CMOS based RF-to-DC converter using a proposed cross-coupled charge pump for energy harvesting. Extraction of high DC voltages from rectifier block in the charge pumps is always a serious bottleneck for RF energy scavenging. One of the dominant obstacles is the threshold voltage (Vth) of the MOS transistor. In this work we are proposing a simple mechanism to eliminate the Vth dependence in MOS transistor, which inherently improves the DC extraction ability of charge pump. The proposed system is implemented in 180nm CMOS technology and simulated using Cadence Spectre. The extracted DC voltage from RF energy is selected as Figure of Merit. It is found using simulation that the modified charge pump shows a high efficiency in DC extraction from RF signal than the conventional cross coupled rectifier based charge pump.
Starting Page	1
Ending Page	4
File Size	1030604
Page Count	4
File Format	PDF
ISBN	9783000437854
DOI	10.1109/ECCTD.2013.6662231
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-08
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	TU Dresden
Subject Keyword	Radio frequency Charge pumps MOSFET Schottky diodes Rectifiers threshold voltage Ultra high frequency Threshold voltage charge pump Energy harvesting RF to DC convertion
Content Type	Text
Resource Type	Article

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