2.4GHz WLAN RF energy harvester for passive indoor sensor nodes

Fatima Alneyadi, Maitha Alkaabi, Salama Alketbi, Shamsa Hajraf, Rashad Ramzan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

23 Citations (Scopus)

Abstract

This paper presents the design and measurement results of an RF Energy Harvester aimed to power sensor nodes like temperature, humidity, chemical, or radiation in an indoor industrial or residential environment. The harvester operates at 2.42 GHz WiFi-WLAN frequency band. It consists of multiple microstrip patch antennas, power combiner, voltage quadruple Greinacher rectifier circuit, and a super capacitor to store the harvested energy. All elements are designed using low-loss Rogers RO3206 substrate. The impedance matching of the power combiner with a rectifier is a non-trivial issue due to change in diode impedance with the input power. The peak efficiency is measured to be 57.8% at 6 to 8dBm input power. In the presence of realistic -10dBm continuous signal, the system can charge a 33mF super capacitor to 1.6V in 20 minutes. This collected energy is enough to power 10mW sensor node for a period of more than 4 seconds to perform wake up, sense and transmit functions, and put a sensor back to sleep mode.

Original languageEnglish
Title of host publicationIEEE International Conference on Semiconductor Electronics, Proceedings, ICSE
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages471-474
Number of pages4
ISBN (Electronic)9781479957606
DOIs
Publication statusPublished - Oct 10 2014
Event11th IEEE International Conference on Semiconductor Electronics, ICSE 2014 - Kuala Lumpur, Malaysia
Duration: Aug 27 2014Aug 29 2014

Publication series

NameIEEE International Conference on Semiconductor Electronics, Proceedings, ICSE

Other

Other11th IEEE International Conference on Semiconductor Electronics, ICSE 2014
Country/TerritoryMalaysia
CityKuala Lumpur
Period8/27/148/29/14

Keywords

  • Energy harvesting
  • WLAN energy harvester
  • greinacher quadrupler
  • greinacher rectifier
  • indoor energy harvesting
  • multiple patch antennas
  • self powered sensors
  • wireless power

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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