Title :
Low cost and efficient rectifier design for microwave energy harvesting
Author :
Mabrouki, Aya ; Latrach, M. ; Ramanandraibe, Esthelladi
Author_Institution :
ESEO: Ecole Super. d´Electron. de l´Ouest, Angers, France
Abstract :
In this article we present a low cost and efficient rectenna design at 2.485 GHz for microwave energy transfer. The antenna and the rectifying circuitry are designed and printed on a FR4 substrate. A single stage voltage doubler rectifier with harmonic terminations is studied and developed for conversion efficiency optimization. Experimental results of the rectifier show 60% RF to DC conversion efficiency for 17 dBm input power at 700 Ω DC load when the rectifier is matched to 50Ω. Free-space measurements of the rectenna demonstrate 2.25V DC output voltage at 2.485GHz for 11dBm received power at 1KΩ DC load. Good agreement between simulation and measurement results is obtained and guidelines for rectenna efficiency optimization are discussed.
Keywords :
energy harvesting; microwave circuits; rectennas; rectifiers; FR4 substrate; RF to DC conversion efficiency; free-space measurements; frequency 2.485 GHz; microwave energy harvesting; microwave energy transfer; rectenna design; rectenna efficiency optimization; rectifier design; rectifying circuitry; resistance 50 ohm; resistance 700 ohm; voltage 2.25 V; voltage doubler rectifier; Antenna measurements; Harmonic analysis; Power harmonic filters; Power measurement; Rectennas; Rectifiers; Voltage measurement; Rectenna; efficiency; harmonic terminations; power conversion; schottky;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2013 Loughborough
Conference_Location :
Loughborough
DOI :
10.1109/LAPC.2013.6711903
