Projects:2014S1-12 Exploring RF Energy Harvesting for Wearable Sensors

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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.

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 ** in Projects Lab
  • Voltage Control Oscillator
  • Network Analyser
  • Anechoic Chamber
  • 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

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