Efficient RF harvesting for low-power input with low-cost lossy substrate rectenna grid

Stylianos D. Assimonis, Spyridon Nektarios Daskalakis, Aggelos Bletsas

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

19 Citations (Scopus)

Abstract

An efficient, low-cost and low-complexity rectenna-grid is analyzed, fabricated and measured, for low-power RF input and RF density. The design consists of two single series rectifier circuits that add the currents from each diode, in order to increase the offered power at the load. Despite the fact that a lossy and low-cost FR-4 substrate was used, the rectenna-grid offers 200 μW at load for 1 μW=cm2 ambient power density, while for 0.01 μW=cm2 the power at load reaches 0.8 μW. Furthermore, RF-to-DC rectification efficiency of 20.5% and 35.3% is achieved at -20 and -10 dBm power input, respectively. Measurements of the proposed RF harvester agree well with simulations. Finally, the rectenna was connected to a DC-to-DC converter and the open voltage was increased from 298 mV to 1.4 V, charging a 1 mF capacitor at 37 min. The stored energy could supply a sensor in a wireless network, with consumption 20 mW, rate 1 kbps and word-length of 20 bits.

Original languageEnglish
Title of host publicationIEEE RFID Technology and Applications Conference (RFID-TA)
Pages1-6
Number of pages6
DOIs
Publication statusPublished - 01 Jan 2014
Event2014 IEEE RFID Technology and Applications Conference, RFID-TA 2014 - Tampere, Finland
Duration: 08 Sep 201409 Sep 2014

Conference

Conference2014 IEEE RFID Technology and Applications Conference, RFID-TA 2014
CountryFinland
CityTampere
Period08/09/201409/09/2014

Keywords

  • Energy harvesting
  • rectennas
  • rectifiers
  • RF Energy Harvesting
  • Wireless Power Transfer
  • Antennas
  • microwaves
  • Internet of Things (IoT)
  • Wireless Sensing
  • Wireless sensor networks

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Efficient RF harvesting for low-power input with low-cost lossy substrate rectenna grid'. Together they form a unique fingerprint.

  • Cite this

    Assimonis, S. D., Daskalakis, S. N., & Bletsas, A. (2014). Efficient RF harvesting for low-power input with low-cost lossy substrate rectenna grid. In IEEE RFID Technology and Applications Conference (RFID-TA) (pp. 1-6) https://doi.org/10.1109/RFID-TA.2014.6934190