Projects:2014S1-12 Exploring RF Energy Harvesting for Wearable Sensors
Contents
Project information
Introduction
Wearable electronic devices are in growing number of uses. Recent years, a number of wearable low power sensors are used in the area of health-care [1] such as electrocardiogram (ECG) and electroencephalography (EEG). These sensors are low energy required which means that several μW [2] is sufficient enough to drive these kinds of sensors. Some devices require longer lifetime working under some circumstances [2], so having a renewable energy source instead of using battery source becomes necessary.
In this project, the rectenna is designed in two parts which is shown on Figure 1. The first part is a dual band antenna which is able to collect ambient RF energy with frequency of GSM 900 and GSM 1800. The second part is a rectifier which is used to convert RF energy to DC energy in order to make the rectenna be able to provide DC power.
Concept Schematic
Design Target
- Design and manufacture a dual band patch antenna that is able to collect the ambient RF energy with the frequencies of GSM900 and GSM1800.
- Design and manufacture a wide band dipole antenna that is able to collect the ambient RF energy with the frequencies of GSM900 and GSM1800.
- Design and manufacture a rectifier which is able to convert the RF energy of GMS900 and GMS1800 into DC energy
Team
Group members
- Mr Mingzhe Li
- Mr Hung-Kai Mai
- Mr Hanqing Wang
Supervisors
- Dr Thomas Kaufmann
- Prof Christophe Fumeaux
Resources
- Bench 22 and 23 in Projects Lab
- Voltage Control Oscillator
- DC generator
- Network Analyser
- Anechoic Chamber
- Spectrum Analyser
- Software
- ANSYS HFSS
- Advanced Design System (ADS)
References
[1] Giuseppina Monti, Laura Corchia Giuseppina Monti and Luciano Tarricone, “UHF wearable rectenna on textile material," IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. 61, no. 7, July. 2013
[2] Benton H. Calhoun, Naveen Verma, David D. Wentzlo_, Seong-Hwan Cho, “Design Consideration for Ultra-Low Energy Wireless Microsensor Nodes" IEEE TRANSACTION ON COMPUTERS, vol. 54, no.6, June. 2005
