Switchable and tunable multiband slot dipole antenna

Developments of frequency reconfigurable antennas in the wireless communication systems have attracted a lot of attention recently. Most reported antennas have narrowband to narrowband reconfiguration and multiband to multiband reconfigurations. In this research, a slot dipole antenna has been intro...

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Main Author:	Idris, Izni Husna
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TK5101-6720 Telecommunication
Online Access:	http://eprints.utm.my/id/eprint/48724/25/IzniHusnaIdrisMFKE2015.pdf
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spelling	my-utm-ep.487242020-06-18T06:28:18Z Switchable and tunable multiband slot dipole antenna 2015-01 Idris, Izni Husna TK5101-6720 Telecommunication Developments of frequency reconfigurable antennas in the wireless communication systems have attracted a lot of attention recently. Most reported antennas have narrowband to narrowband reconfiguration and multiband to multiband reconfigurations. In this research, a slot dipole antenna has been introduced with the ability to produce a multiband to narrowband reconfiguration. This type of antenna can suppress the problem of co-site interferences. Thus, two types of frequency reconfigurable antennas are studied and discussed which are switchable and tunable multiband antennas. The switchable multiband antenna is reconfigured by using Radio Frequency (RF) switches. The proposed antenna is capable to reconfigure from multiband to dual and/or single band. By having seven configurations of switches, this antenna can operate at 2.4 GHz, 3.5 GHz and/or 5.2 GHz. The antenna is able to have three states of single-band, three states of dual-band and one state of tripleband. Meanwhile, the tunable multiband antenna is reconfigured by using variable capacitors. The proposed antenna is capable to have a wide frequency tunability range for dual or single band operation (1.5 GHz - 4.5 GHz, ratio of 3:1). Each antenna has been successfully designed, fabricated and tested. The simulation and measurement results were analysed and presented in terms of reflection coefficient, radiation pattern and gain. The simulation and measurement results have been compared and a very good agreement was achieved. The reflection coefficient average accuracies of 98% has been achieved. These proposed antennas are suitable for future multi-mode applications such as cognitive radio systems. 2015-01 Thesis http://eprints.utm.my/id/eprint/48724/ http://eprints.utm.my/id/eprint/48724/25/IzniHusnaIdrisMFKE2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:90860 masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK5101-6720 Telecommunication
spellingShingle	TK5101-6720 Telecommunication Idris, Izni Husna Switchable and tunable multiband slot dipole antenna
description	Developments of frequency reconfigurable antennas in the wireless communication systems have attracted a lot of attention recently. Most reported antennas have narrowband to narrowband reconfiguration and multiband to multiband reconfigurations. In this research, a slot dipole antenna has been introduced with the ability to produce a multiband to narrowband reconfiguration. This type of antenna can suppress the problem of co-site interferences. Thus, two types of frequency reconfigurable antennas are studied and discussed which are switchable and tunable multiband antennas. The switchable multiband antenna is reconfigured by using Radio Frequency (RF) switches. The proposed antenna is capable to reconfigure from multiband to dual and/or single band. By having seven configurations of switches, this antenna can operate at 2.4 GHz, 3.5 GHz and/or 5.2 GHz. The antenna is able to have three states of single-band, three states of dual-band and one state of tripleband. Meanwhile, the tunable multiband antenna is reconfigured by using variable capacitors. The proposed antenna is capable to have a wide frequency tunability range for dual or single band operation (1.5 GHz - 4.5 GHz, ratio of 3:1). Each antenna has been successfully designed, fabricated and tested. The simulation and measurement results were analysed and presented in terms of reflection coefficient, radiation pattern and gain. The simulation and measurement results have been compared and a very good agreement was achieved. The reflection coefficient average accuracies of 98% has been achieved. These proposed antennas are suitable for future multi-mode applications such as cognitive radio systems.
format	Thesis
qualification_level	Master's degree
author	Idris, Izni Husna
author_facet	Idris, Izni Husna
author_sort	Idris, Izni Husna
title	Switchable and tunable multiband slot dipole antenna
title_short	Switchable and tunable multiband slot dipole antenna
title_full	Switchable and tunable multiband slot dipole antenna
title_fullStr	Switchable and tunable multiband slot dipole antenna
title_full_unstemmed	Switchable and tunable multiband slot dipole antenna
title_sort	switchable and tunable multiband slot dipole antenna
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/48724/25/IzniHusnaIdrisMFKE2015.pdf
_version_	1747817460304707584

Switchable and tunable multiband slot dipole antenna

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