Design of RF energy harvesting system for energizing low power devices
Electromagnetic energy harvesting holds a promising future for energizing low power electronic devices in wireless communication circuits. This article presents an RF energy harvesting system that can harvest energy from the ambient surroundings at the downlink radio frequency range of GSM-900 b...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EMW Publishing
2012
|
| Subjects: | |
| Online Access: | http://eprints.intimal.edu.my/239/1/1.pdf http://eprints.intimal.edu.my/239/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Electromagnetic energy harvesting holds a promising
future for energizing low power electronic devices in wireless
communication circuits. This article presents an RF energy harvesting
system that can harvest energy from the ambient surroundings at the
downlink radio frequency range of GSM-900 band. The harvesting
system is aimed to provide an alternative source of energy for
energizing low power devices. The system design consists of three
modules: a single wideband 377 E-shaped patch antenna, a pi
matching network and a 7-stage voltage doubler circuit. These three
modules were fabricated on a single printed circuit board. The antenna
and Pi matching network have been optimized through electromagnetic
simulation software, Agilent ADS 2009 environment. The uniqueness
of the system lies in the partial ground plane and the alignment of
induced electric ¯eld for maximum current °ow in the antenna that
maximizes the captured RF energy. The design and simulation of the
voltage doubler circuit were performed using Multisim software. All
the three modules were integrated and fabricated on a double sided FR
4 printed circuit board. The DC voltage obtained from the harvester
system in the ¯eld test at an approximate distance of 50m from GSM
cell tower was 2.9 V. This voltage was enough to power the STLM20
temperature sensor. |
|---|