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Solar/EM energy harvester for autonomous operation of a monitoring sensor platform

Published online by Cambridge University Press:  21 March 2014

Kyriaki Niotaki ,
Francesco Giuppi ,
Apostolos Georgiadis  and
Ana Collado
Kyriaki Niotaki*
Affiliation:
Centre Tecnologic de Telecomunicacions de Catalunya (CTTC), Av. Carl Friedrich Gauss 7, 08860 Castelldefels, Barcelona, Spain. Phone: +34 936452900
Francesco Giuppi
Affiliation:
Centre Tecnologic de Telecomunicacions de Catalunya (CTTC), Av. Carl Friedrich Gauss 7, 08860 Castelldefels, Barcelona, Spain. Phone: +34 936452900
Apostolos Georgiadis
Affiliation:
Centre Tecnologic de Telecomunicacions de Catalunya (CTTC), Av. Carl Friedrich Gauss 7, 08860 Castelldefels, Barcelona, Spain. Phone: +34 936452900
Ana Collado
Affiliation:
Centre Tecnologic de Telecomunicacions de Catalunya (CTTC), Av. Carl Friedrich Gauss 7, 08860 Castelldefels, Barcelona, Spain. Phone: +34 936452900
*
Corresponding author: K. Niotaki Email: [email protected]
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Abstract

In this paper, a hybrid solar/electromagnetic (EM) energy harvester that operates at 2.45 GHz is presented. The proposed harvester integrates the solar cells in the same area as the rectenna element obtaining a compact implementation. The radiating element that forms part of the rectenna is a cavity-backed slot antenna based on substrate-integrated waveguide technology, which allows for a compact, single substrate implementation. The radiating element is connected to a circuit that provides both the rectification of the incoming EM signals and the collection of DC energy coming from solar cells. A single-substrate prototype has been implemented, demonstrating an overall power conversion efficiency up to 30%, depending on the incoming radio frequency signal level and the ambient light conditions.

Type
Research Article
Information
Wireless Power Transfer , Volume 1 , Issue 1 , March 2014 , pp. 44 - 50
Copyright
Copyright © Cambridge University Press 2014 

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References

REFERENCES

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