Title :
Energy harvesting circuit using integrated transformer
Author :
Gonçalves, Hugo B. ; Martins, Miguel A. ; Fernandes, Jorge R.
Author_Institution :
INESC-ID, Lisbon, Portugal
Abstract :
In this work we present a prototype circuit to harvest energy from radio frequency (RF) electromagnetic waves based on an integrated transformer together with a half-wave multi-stage rectifier. This circuit is designed to be impedance matched to a standard 50 Ω antenna and to operate at 2.4 GHz with input power as low as -15 dBm. The circuit presented here shows that it is possible to harvest low power input signals and therefore it can be used to supply alone a circuit, or to work as a backup battery charger. The circuit was designed and simulated in a standard 130 nm CMOS process.
Keywords :
CMOS integrated circuits; rectifiers; transformers; CMOS process; energy harvesting circuit; frequency 2.4 GHz; half-wave multistage rectifier; integrated transformer; radio frequency electromagnetic waves; resistance 50 ohm; size 130 nm; Antennas; Energy harvesting; Impedance; Impedance matching; Radio frequency; Rectifiers; Transistors;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5937711