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Design and development of optically transparent rectenna for RF energy harvesting applications

Published online by Cambridge University Press:  31 January 2022

Potti Devisowjanya*
Affiliation:
Department of ECE, Amrita School of Engineering, Chennai, 601103, India
Mohammed Gulam Nabi Alsath
Affiliation:
Department of ECE, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India
Savarimuthu Kirubaveni
Affiliation:
Department of ECE, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India
G. Sudhilaya
Affiliation:
Research Scientist, SAMEER-Center for Electromagnetics, Chennai, India
*
Author for correspondence: Potti Devisowjanya, E-mail: [email protected]

Abstract

An optically transparent ultra-wideband (UWB) Vivaldi antenna with a rectifier circuit is proposed in this paper. The proposed antenna is designed and fabricated on a soda-lime glass substrate with fluorine doped conductive oxide (FTO) as the conductive layer. A radial stub is used for better impedance matching and enhancing the impedance bandwidth of the antenna. It operates over a frequency range of 2–6 GHz with a bandwidth of 4 GHz. It has a directional radiation pattern with a realized peak gain of 2.5 dBi at 4 GHz and simulated radiation efficiency greater than 28%. The transparent antenna is integrated with a rectifier and a matching circuit for radio frequency energy harvesting applications. The rectifier and matching circuit is designed on an FR4 substrate. The fabricated rectenna provided a dc voltage of 140 mV from the ambient environment. The proposed rectenna can be installed in handheld devices that increase the scope of applications in automobiles and mobile communications.

Type
Wireless Power Transfer and Energy Harvesting
Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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