Optimization of the Voltage Doubler Stages in an RF-DC Convertor Module for Energy Harvesting


This paper presents an optimization of the voltage doubler stages in an energy conversion module for Radio Frequency (RF) energy harvesting system at 900 MHz band. The function of the energy conversion module is to convert the (RF) signals into direct-current (DC) voltage at the given frequency band to power the low power devices/circuits. The design is based on the Villard voltage doubler circuit. A 7 stage Schottky diode voltage doubler circuit is designed, modeled, simulated, fabricated and tested in this work. Multisim was used for the modeling and simulation work. Simulation and measurement were carried out for various input power levels at the specified frequency band. For an equivalent incident signal of –40 dBm, the circuit can produce 3mV across a 100 k? load. The results also show that there is a multiplication factor of 22 at 0 dBm and produces DC output voltage of 5.0 V in measurement. This voltage can be used to power low power sensors in sensor networks ultimately in place of batteries.

Share and Cite:

K. Devi, N. Din and C. Chakrabarty, "Optimization of the Voltage Doubler Stages in an RF-DC Convertor Module for Energy Harvesting," Circuits and Systems, Vol. 3 No. 3, 2012, pp. 216-222. doi: 10.4236/cs.2012.33030.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] S. von der Mark and G. Boeck, “Ultra Low Power Wakeup Detector for Sensor Networks,” SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC 2007), Berlin, 29 October-1 November 2007, pp. 865-868. doi:10.1109/IMOC.2007.4404394
[2] H. Yan, J. G. M. Montero, A. Akhnoukh, L. C. N. de Vreede and J. N. Burghartz, “An Integration Scheme for RF Power Harvesting,” Proceedings of STW Annual Workshop on Semiconductor Advances for Future Electronics and Sensors, Veldhoven, November 2005, pp. 64-66. doi:
[3] T. Ungan and L. M. Reindl, “Concept for Harvesting Low Ambient RF-Sources for Microsystems,” 2007. http://www.imtek.de/content/pdf/public/2007/powermems_2007_paper_ungan.pdf
[4] J. Wang, L. Dong and Y. Z. Fu, “Modeling of UHF Voltage Multiplier for Radio-Triggered Wake-Up Circuits,” International Journal of Circuit Theory and Application, Vol. 39, No. 11, 2010, pp. 1189-1197. doi:10.1002/cta.692
[5] J. A. Starzyk, Y.-W. Jan and F. J. Qiu, “A DC-DC Charge Pump Design Based on Voltage Doublers,” IEEE Transactions on Circuits and Systems-I: Fundamental Theory and Applications, Vol. 48, No. 3, 2001, pp. 350-359.
[6] HSMS-2850, “Surface Mount Zero Bias Schottky Detector Diodes.” http://www.crystal-radio.eu/hsms285xdata.pdf
[7] D. W. Harrist, “Wireless Battery Charging System Using Radio Frequency Energy Harvesting,” M.S. Thesis, University of Pittsburgh, Pittsburgh, 2004
[8] E. Bergeret, J. Gaubert, P. Pannie and J. M. Gaultierr, “Modeling and Design of CMOS UHF Voltage Multiplier for RFID in an EEPROM Compatible Process,” IEEE Transactions on Circuits and Systems-I, Vol. 54, No. 10, 2007, pp. 833-837. doi:10.1109/TCSII.2007.902222
[9] B. Emmanuel, J. Gaubert, P. Pannier and J. M. Gaultier, “Conception of UHF Voltage Multiplier for RFID Circui,” IEEE North-East Workshop on Circuits and Systems, Gatineau, June 2006, pp. 217-220. doi:10.1109/NEWCAS.2006.250961
[10] H. J. Visser, A. C. F. Reniers and J. A. C. Theeuwes, “Ambient RF Energy Scavenging: GSM and WLAN Power Density Measurements,” Proceedings of the 38th European Microwave Conference, Eindhoven, 27-31 October 2008, pp. 721-724. doi:10.1109/EUMC.2008.4751554

Copyright © 2023 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.