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Reactive-loaded antenna designs for ultra-wideband (UWB) applications

Doctor of Philosophy in Communication Engineering

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Bibliographic Details
Main Author: Siti Zubaidah, Aziz
Other Authors: Mohd Faizal, Jamlos, Assoc. Prof. Ir. Dr.
Format: Thesis
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2017
Subjects:
Ultra-wideband antennas
Ultra-wideband communication systems
Antennas
Ultra wideband (UWB)
UWB antennas
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78353
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spelling my.unimap-783532023-04-17T07:18:57Z Reactive-loaded antenna designs for ultra-wideband (UWB) applications Siti Zubaidah, Aziz Mohd Faizal, Jamlos, Assoc. Prof. Ir. Dr. Ultra-wideband antennas Ultra-wideband communication systems Antennas Ultra wideband (UWB) UWB antennas Doctor of Philosophy in Communication Engineering Ultra wideband (UWB) technology have attracted incredible research attention from research institution and industry due to its exclusive characteristics. The need of UWB antenna is speedily growth for many types of UWB applications. The challenges on designing UWB antenna are to produce the required operating bandwidth, an adequate gain with stable radiation pattern, and compact size of antenna. In this thesis, the research study is focused on the antenna design, development, and prototyping the UWB antennas for UWB application that fulfil the characteristics. Reactively loading technique is chosen as the method to provide those appealing characteristics. This technique includes slots, notches, and slits. The selected technique has features that can provide UWB antenna with requires operating bandwidth, compactness, stable radiation pattern, and acceptable gain. Five UWB antennas have been designed, fabricated and their performances are investigated comprehensively. The first antenna is designed on FR4 substrate which comprises of unsymmetrical rectangular radiating element with slots, and symmetrical slots with slit on the ground plane. The second antenna has multi-slots circular radiating element, a partial ground plane, and a ground plane on top with slits that is fabricated on FR4 substrate. The design of third antenna has multi-slots in the radiating element, slot in the feed line, conductor-backed planes under the FR4 substrate, and two partial ground planes. The fourth antenna consists of slot in the radiating element, multi-slots on the ground plane, a conductor-backed plane under the substrate and slits on the ground plane on top. The fourth antenna is fabricated on the FR4 substrate. The fifth antenna is designed with same configuration as the fourth antenna but using a different substrate which is Taconic (TLY-5A). The UWB antennas have been fabricated and measured in an anechoic chamber in order to observe their performances. From observation, all antennas achieved fractional bandwidth more than 100 % that covered the entire UWB operating bandwidth from 3.1 GHz to 10.6 GHz, exhibit stable nearly omni-directional radiation pattern and appropriate maximum gain of 7.35 dBi. These behaviours prove that those antennas have high potential for being used in UWB applications includes radar, imaging, sensor, communication, and others. Based on this research, the second antenna achieved a very wideband operating bandwidth up to 32 GHz. Therefore, the second antenna can be applied for future application such as SG application and others. 2017 2023-04-17T07:15:24Z 2023-04-17T07:15:24Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78353 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) School of Computer and Communication Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Ultra-wideband antennas
Ultra-wideband communication systems
Antennas
Ultra wideband (UWB)
UWB antennas
spellingShingle Ultra-wideband antennas
Ultra-wideband communication systems
Antennas
Ultra wideband (UWB)
UWB antennas
Siti Zubaidah, Aziz
Reactive-loaded antenna designs for ultra-wideband (UWB) applications
description Doctor of Philosophy in Communication Engineering
author2 Mohd Faizal, Jamlos, Assoc. Prof. Ir. Dr.
author_facet Mohd Faizal, Jamlos, Assoc. Prof. Ir. Dr.
Siti Zubaidah, Aziz
format Thesis
author Siti Zubaidah, Aziz
author_sort Siti Zubaidah, Aziz
title Reactive-loaded antenna designs for ultra-wideband (UWB) applications
title_short Reactive-loaded antenna designs for ultra-wideband (UWB) applications
title_full Reactive-loaded antenna designs for ultra-wideband (UWB) applications
title_fullStr Reactive-loaded antenna designs for ultra-wideband (UWB) applications
title_full_unstemmed Reactive-loaded antenna designs for ultra-wideband (UWB) applications
title_sort reactive-loaded antenna designs for ultra-wideband (uwb) applications
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2017
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78353
_version_ 1772813158973440000
score 13.214268

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