Title :
Radiative RF power transfer solutions for wireless sensors
Author :
Visser, Hubregt J. ; Keyrouz, S.
Author_Institution :
Holst Centre/imec, Eindhoven, Netherlands
Abstract :
Two rectennas are presented. One consists of a printed 5Ω antenna, connected to a loaded voltage doubling rectifier through a LC impedance matching network. The other one consists of a printed loop antenna, complex conjugately impedance-matched to the same rectifier. The second rectenna is reduced in size by a factor of more than four with respect to the first rectenna and showing a 55% RF-to-DC power conversion efficiency at an input power level of -10 dBm. This is a 5% improvement with respect to the 5Ω-based rectenna.
Keywords :
LC circuits; impedance matching; microstrip antennas; power conversion; radiative transfer; radiofrequency power transmission; rectennas; rectifiers; wireless sensor networks; RF-to-DC power conversion efficiency; impedance matching network; loaded voltage doubling rectifier; printed loop antenna; radiative RF power transfer solution; rectenna; resistance 50 ohm; wireless sensor; Impedance; Impedance matching; Radio frequency; Receiving antennas; Rectennas; Wireless sensor networks;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6905026
