ubc
Enhanced Passive RF-DC Converter Circuit Efficiency for Low RF Energy Harvesting
2017-05-02
[Electronic ed.]
prv
Universitätsbibliothek Chemnitz
Universitätsbibliothek Chemnitz, Chemnitz
Fakultät für Elektrotechnik und Informationstechnik
Professur für Mess- und Sensortechnik
male
male
female
For radio frequency energy transmission, the conversion efficiency of the receiver is decisive not only for reducing sending power, but also for enabling energy transmission over long and variable distances. In this contribution, we present a passive RF-DC converter for energy harvesting at ultra-low input power at 868 MHz. The novel converter consists of a reactive matching circuit and a combined voltage multiplier and rectifier. The stored energy in the input inductor and capacitance, during the negative wave, is conveyed to the output capacitance during the positive one. Although Dickson and Villard topologies have principally comparable efficiency for multi-stage voltage multipliers, the Dickson topology reaches a better efficiency within the novel ultra-low input power converter concept. At the output stage, a low-pass filter is introduced to reduce ripple at high frequencies in order to realize a stable DC signal. The proposed rectifier enables harvesting energy at even a low input power from −40 dBm for a resistive load of 50 kΩ. It realizes a significant improvement in comparison with state of the art solutions
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Gleichrichter, Elektrische Spannung
Gleichrichter, Technische Universität Chemnitz, Publikationsfonds
Radio frequency energy transmission, RF-DC Converter, rectifier, power efficiency, voltage multiplier, Villard topology, Dickson topology, Chemnitz University of Technology, Publication funds
urn:nbn:de:bsz:ch1-qucosa-224264
10.3390/s17030546
Technische Universität Chemnitz
edt
Technische Universität Chemnitz, Chemnitz
MDPI AG
pbl
MDPI AG, Schweiz
Issam
Chaour
aut
Ahmed
Fakhfakh
aut
Olfa
Kanoun
aut
eng
http://dx.doi.org/10.3390/s17030546
Link zur Originalpublikation in der Zeitschrift "Sensors"
Sensors 2017, 17(3), 546; doi:10.3390/s17030546
1424-8220
born digital
blum
ute.blumtritt@bibliothek.tu-chemnitz.de
article