Contribution to electromagnetic energy harvesting for wireless autonomousdevices

Abstract : The research works of this thesis are focused on the ambient electromagnetic energy harvesting to improve the life time of wireless autonomous devices. The waves produced by cellular telephones, Wireless Internet and also radio and television transmissions may be captured and rectified to produce a continuous voltage able to supply mobile phones, environment data sensors, computers, etc. Broadband or multiband antennas, combined to a high frequency rectifying circuits with Schottky diodes must be optimized for the reception and rectifying of a very low level electromagnetic power (about a few micro watts per cm2). In this thesis, an important optimization work is done in frequency domain and especially in power domain. The high frequency circuit simulator ADS and high frequency electromagnetic simulator HFSS, are used to design the rectenna. The obtained conversion efficiencies place our laboratory in the international state of the art in electromagnetic energy harvesting.
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Yuwei Zhou. Contribution to electromagnetic energy harvesting for wireless autonomousdevices. Engineering Sciences [physics]. UNIVERSITE DE NANTES, 2013. English. ⟨NNT : ED503-203⟩. ⟨tel-01104855⟩

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