DocumentCode :
1426941
Title :
Strategy for Microwave Energy Harvesting From Ambient Field or a Feeding Source
Author :
Marian, Vlad ; Allard, Bruno ; Vollaire, Christian ; Verdier, Jacques
Author_Institution :
Ampere Lab., Ecole Centrale de Lyon, Ecully, France
Volume :
27
Issue :
11
fYear :
2012
Firstpage :
4481
Lastpage :
4491
Abstract :
Wireless energy transfer has been demonstrated using microwave electromagnetic support. Significant efficiencies are reported in the case of large dimension systems. Lots of embedded systems require a small power supply but with a large degree of integration where standard contactless energy transfer techniques suffer from poor efficiency. In such systems, RF input energy is rectified using rectenna circuits. The latter circuits are optimized for a given input RF power and cannot accommodate the two possible ways of energy transfer: the dedicated transfer (high power) or the harvesting of ambient energy (low power). This paper presents a novel rectenna architecture tunable for 900 MHz-2.45 GHz operation, able to process RF input power in the -30 to +30 dBm (dB miliwatt) range with a peak efficiency of 80%.
Keywords :
energy harvesting; integration; power supply quality; rectennas; RF input energy; ambient field; embedded systems; feeding source; frequency 900 MHz to 2.45 GHz; large dimension systems; latter circuits; microwave electromagnetic support; microwave energy harvesting; power supply; rectenna circuits; wireless energy transfer; Energy exchange; Receiving antennas; Rectennas; Schottky diodes; Wireless sensor networks; Contactless energy supply; energy harvesting; rectenna; switch;
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/TPEL.2012.2185249
Filename :
6135807
Link To Document :
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