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A dual-band rectenna using broadband DRA loaded with slot

Published online by Cambridge University Press:  13 December 2017

Sachin Agrawal ,
Manoj Singh Parihar  and
Pravin N. Kondekar
Sachin Agrawal*
Affiliation:
Department of Electronics and Communication Engineering, Indian Institute of Information Technology Design & Manufacturing Jabalpur, Jabalpur, India
Manoj Singh Parihar
Affiliation:
Department of Electronics and Communication Engineering, Indian Institute of Information Technology Design & Manufacturing Jabalpur, Jabalpur, India
Pravin N. Kondekar
Affiliation:
Department of Electronics and Communication Engineering, Indian Institute of Information Technology Design & Manufacturing Jabalpur, Jabalpur, India
*
Corresponding author: S. Agrawal Email: bitssachin.agrawal@gmail.com
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Abstract

This paper presents a broadband hybrid slot-dielectric resonator antenna for radiofrequency (RF) energy-harvesting application. The antenna geometry consists of a simple pentagon-shaped dielectric resonator antenna (PDRA) excited by a microstrip feed underlying rectangular slot with narrow notch. It is investigated that the bandwidth of the proposed PDRA is improved significantly owing to electromagnetic coupling between feeding slot and the dielectric resonator. The measured results demonstrate that the proposed PDRA achieves an impedance bandwidth of 110.8%, covering the frequency range from 0.86 to 3 GHz in addition of stable radiation pattern with peak gain of 6.8 dBi and more than 90% radiation efficiency throughout the band, showing its suitability for RF energy harvesting application. For this to be feasible, the developed antenna is matched with the rectifier at two public telecommunication bands of GSM-900 and GSM-1800 using a compact dual-band hybrid matching network. The measured result demonstrates that the proposed dual-band rectenna system provides the peak efficiency of 63 and 59% for a load impedance of 4.7 kΩ at 0.9 and 1.8 GHz, respectively.

Keywords

Antenna designModeling and measurementsWireless power transfer and energy harvesting
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Special Issue 1: Journee Nationale des Micro-ondes 2017 , February 2018 , pp. 59 - 66
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2017 

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