Proximity-coupled microstrip patch antenna for WiMAX using low dielectric constant substrate / Nuraisya Alwanie Aluyi

The purpose of this project is to design a proximity-coupled microstrip patch antenna operating at 3 different frequencies. Proximity-coupled microstrip patch antenna is a noncontact fed patch created in a multilayer antenna to overcome the shortcomings of the direct contact fed patch. Spurious radi...

Full description

Saved in:

Bibliographic Details
Main Author:	Aluyi, Nuraisya Alwanie
Format:	Thesis
Language:	English
Published:	2008
Subjects:	Wireless communication systems Mobile communication systems Access control Microstrip antennas
Online Access:	https://ir.uitm.edu.my/id/eprint/68879/1/68879.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-uitm-ir.68879
record_format	uketd_dc
spelling	my-uitm-ir.688792023-01-09T02:32:34Z Proximity-coupled microstrip patch antenna for WiMAX using low dielectric constant substrate / Nuraisya Alwanie Aluyi 2008 Aluyi, Nuraisya Alwanie Wireless communication systems. Mobile communication systems. Access control Microstrip antennas The purpose of this project is to design a proximity-coupled microstrip patch antenna operating at 3 different frequencies. Proximity-coupled microstrip patch antenna is a noncontact fed patch created in a multilayer antenna to overcome the shortcomings of the direct contact fed patch. Spurious radiation reduction is one of the most important advantages of this feed. This design also provides choices between two different dielectric substrates in order to optimize the antenna performance. The important parameters in this project are return loss (SJI), voltage standing wave ratio (VSWR), bandwidth, gain and the directivity of the antenna. All the parameters are taken within 3 WiMAX frequencies which are 2.3GHz, 2.5GHz and 3.5 GHz in order to see the reliability of the antenna. Specific details such as patch shape and feeding method influence patch antenna behavior, but the major factor influencing the performance of a microstrip antenna is the substrate upon which it resides. Most of the previous attempts were focused on the improvement of either the bandwidth or directivity. Thus, it would be useful to improve both of these parameters at the same time to enhance the flexibility of the patch antenna. The bandwidth or directivity can be increased by using thick substrate which is by using the multilayer technique. The bandwidth of a microstrip antenna is best for low dielectric constant substrates and if the substrate thickness is increased in an attempt to improve bandwidth, spurious feed radiation increases and surface wave power increases. Here two antennas with the combination of Duroid® 5880 (er = 2.2) and Foam (sr = 1.07) and two layers of Duroid® 5880 (er = 2.2) are compared. The comparison shows that the antenna with Foam as one of its substrate is better than the other one which is composed of two layers of Duroid® 5880 2008 Thesis https://ir.uitm.edu.my/id/eprint/68879/ https://ir.uitm.edu.my/id/eprint/68879/1/68879.pdf text en public degree Universiti Teknologi MARA (UiTM) Faculty of Electrical Engineering Jusoh, Mohamad Huzaimy
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Jusoh, Mohamad Huzaimy
topic	Wireless communication systems Mobile communication systems Access control Microstrip antennas
spellingShingle	Wireless communication systems Mobile communication systems Access control Microstrip antennas Aluyi, Nuraisya Alwanie Proximity-coupled microstrip patch antenna for WiMAX using low dielectric constant substrate / Nuraisya Alwanie Aluyi
description	The purpose of this project is to design a proximity-coupled microstrip patch antenna operating at 3 different frequencies. Proximity-coupled microstrip patch antenna is a noncontact fed patch created in a multilayer antenna to overcome the shortcomings of the direct contact fed patch. Spurious radiation reduction is one of the most important advantages of this feed. This design also provides choices between two different dielectric substrates in order to optimize the antenna performance. The important parameters in this project are return loss (SJI), voltage standing wave ratio (VSWR), bandwidth, gain and the directivity of the antenna. All the parameters are taken within 3 WiMAX frequencies which are 2.3GHz, 2.5GHz and 3.5 GHz in order to see the reliability of the antenna. Specific details such as patch shape and feeding method influence patch antenna behavior, but the major factor influencing the performance of a microstrip antenna is the substrate upon which it resides. Most of the previous attempts were focused on the improvement of either the bandwidth or directivity. Thus, it would be useful to improve both of these parameters at the same time to enhance the flexibility of the patch antenna. The bandwidth or directivity can be increased by using thick substrate which is by using the multilayer technique. The bandwidth of a microstrip antenna is best for low dielectric constant substrates and if the substrate thickness is increased in an attempt to improve bandwidth, spurious feed radiation increases and surface wave power increases. Here two antennas with the combination of Duroid® 5880 (er = 2.2) and Foam (sr = 1.07) and two layers of Duroid® 5880 (er = 2.2) are compared. The comparison shows that the antenna with Foam as one of its substrate is better than the other one which is composed of two layers of Duroid® 5880
format	Thesis
qualification_level	Bachelor degree
author	Aluyi, Nuraisya Alwanie
author_facet	Aluyi, Nuraisya Alwanie
author_sort	Aluyi, Nuraisya Alwanie
title	Proximity-coupled microstrip patch antenna for WiMAX using low dielectric constant substrate / Nuraisya Alwanie Aluyi
title_short	Proximity-coupled microstrip patch antenna for WiMAX using low dielectric constant substrate / Nuraisya Alwanie Aluyi
title_full	Proximity-coupled microstrip patch antenna for WiMAX using low dielectric constant substrate / Nuraisya Alwanie Aluyi
title_fullStr	Proximity-coupled microstrip patch antenna for WiMAX using low dielectric constant substrate / Nuraisya Alwanie Aluyi
title_full_unstemmed	Proximity-coupled microstrip patch antenna for WiMAX using low dielectric constant substrate / Nuraisya Alwanie Aluyi
title_sort	proximity-coupled microstrip patch antenna for wimax using low dielectric constant substrate / nuraisya alwanie aluyi
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Electrical Engineering
publishDate	2008
url	https://ir.uitm.edu.my/id/eprint/68879/1/68879.pdf
_version_	1783735818772283392

Proximity-coupled microstrip patch antenna for WiMAX using low dielectric constant substrate / Nuraisya Alwanie Aluyi

Similar Items