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Design and evaluation of a wireless CMOS energy harvester for biomedical sensor networks

Published online by Cambridge University Press:  04 June 2015

Cihun-Siyong Alex Gong*
Affiliation:
Department of Electrical Engineering, School of Electrical and Computer Engineering, College of Engineering, Chang Gung University, Taoyuan 333, Taiwan Portable Energy System Group of Green Technology Research Center, Chang Gung University, Taoyuan 333, Taiwan
*
Corresponding author: C.-S. Alex Gong Email: [email protected].

Abstract

An efficient platform of wireless power delivery through a pair of coupling coils with a fully integrated complementary metal-oxide-semiconductor (CMOS) rectifier is designed and evaluated in this paper. The research is intended for inductively powered energy harvesting application of biomedical sensor network. By making use of high-performance active diodes fulfilling almost ideal switching (zero forward voltage drop) and circuit to be provided with negative resistance, the proposed rectifier circuit is able to achieve a maximum conversion efficiency of more than 90%. This makes it ultra low-loss without any special device requiring additional manufacturing procedures, thereby featuring dramatically reduced production cost. Experimental studies with respect to all aspects of its performance including that used to emulate a truly biological tissue are given as proof of concept.

Type
Research Paper
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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