A Compact Circular Rectenna for RF-Energy Harvesting at ISM Band.

Micromachines (Basel)

Department of Electrical Engineering, College of Engineering, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.

Published: April 2023

AI Article Synopsis

  • The text discusses the importance of creating a small and efficient rectenna for powering low-power devices wirelessly.
  • It describes the design of a simple circular patch antenna that operates at the ISM band (2.45 GHz), achieving a gain of 2.38 dBi and an impedance of 50 Ω.
  • The fabricated rectenna shows promising performance with 52% RF-to-DC conversion efficiency, making it suitable for providing power to low sensor nodes in wireless applications.

Article Abstract

With low-power gadgets proliferating, the development of a small, effective rectenna is crucial for wirelessly energizing devices. A simple circular patch with a partial ground plane for RF-energy harvesting at ISM (2.45 GHz) band is proposed in this work. The simulated antenna resonates at 2.45 GHz with an input impedance of 50 Ω and a gain of 2.38 dBi. An L-section matching a circuit with a voltage doubler is proposed to provide excellent RF-to-DC transformation efficiency at low power input. The proposed rectenna is fabricated and the results show that the return loss and realized gain have good characteristics at the ISM band with 52% of RF-to-DC transformation efficiency, with an input of 0 dBm power. The projected rectenna is apt for power-up low sensor nodes in wireless sensor applications.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10140817PMC
http://dx.doi.org/10.3390/mi14040825DOI Listing

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