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Bandwidth enhancement of capacitive fed monopole antenna using parasitic patches

Published online by Cambridge University Press:  09 January 2015

Kamalaveni Ayyadurai Open the ORCID record for Kamalaveni Ayyadurai [Opens in a new window]  and
Ganesh Madhan Muthu
Kamalaveni Ayyadurai*
Affiliation:
Madras Institute of Technology Campus, Anna University, Chennai, India. Phone: + 91 8870567988
Ganesh Madhan Muthu
Affiliation:
Madras Institute of Technology Campus, Anna University, Chennai, India. Phone: + 91 8870567988
*
Corresponding author:A. Kamalaveni Email: [email protected]
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Abstract

This paper proposed a compact planar monopole antenna operating at 5 GHz (5.180–5.825 GHz) industrial, scientific and medical (ISM) radio band. The antenna constructed with 20 mm × 12 mm radiating element and 25 mm square of the ground plane in FR4 substrate provided −10 dB bandwidth of 1 GHz (5.4–6.4 GHz). To improve the bandwidth, parasitic elements are added with the monopole antenna. A capacitive feed is also incorporated in the design. It observed that the proposed antenna with parasitic elements provides a larger impedance bandwidth of about 3 GHz (5.1–8.1 GHz), which is three-fold improvements over the one without parasitic patches. The prototype of the antenna that operates at 5.8 GHz frequency range is fabricated and characterized using a near-field measurement system. A good agreement is found between the simulation and measured results.

Keywords

Antenna designModeling and measurementsAntennas and propagation for wireless systems
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 2 , March 2016 , pp. 301 - 307
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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