Design of an RF-DC conversion circuit for energy harvesting
The design of voltage multiplier module used for energy harvesting system from ambient at downlink radio frequency range (935.2 MHz-959.8 MHz) of GSM- 900 is presented. The function of this voltage multiplier circuit is to convert the RF energy signal into DC voltage that can be used to energiz...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2012
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| Subjects: | |
| Online Access: | http://eprints.intimal.edu.my/182/ http://eprints.intimal.edu.my/182/1/9.pdf |
| Summary: | The design of voltage multiplier module used
for energy harvesting system from ambient at downlink
radio frequency range (935.2 MHz-959.8 MHz) of GSM-
900 is presented. The function of this voltage multiplier
circuit is to convert the RF energy signal into DC
voltage that can be used to energize the low power
electronic devices. The design was based on the Villard
voltage multiplier circuit. A 4 -stage Schottky diode
voltage multiplier circuit was designed, modeled,
simulated, fabricated and tested for its performance.
Multisim was used for the modeling and simulation
work. Simulation and practical tests were carried out
for various input power levels at the specified frequency
band. The RF input power levels verses the output
voltages at the nodes of the Villard network were
recorded. The input for the voltage multiplier module
was fed through an efficient matching network from an
RF energy harvesting antenna which is designed at 377
Ω impedance. For a received signal of –27dBm (1.99)
μW at the antenna modules produce a DC output
voltage of 2.1 V across 100 kΩ load. |
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