Dielectric resonator reflectarray antenna in Ku-Band

Direct broadcasting satellite has become a vital system in satellite communication globally especially for digital broadcasting purposes. Currently, a parabolic antenna is normally used for this application, however the advantages of reflectarray which is flat in shape and possibility for beam steer...

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Main Author:	Dzulkipli, Nur Izyani
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TK5101-6720 Telecommunication
Online Access:	http://eprints.utm.my/id/eprint/48844/25/NurIzyaniDzulkipliMFKE2014.pdf
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id	my-utm-ep.48844
record_format	uketd_dc
spelling	my-utm-ep.488442020-06-30T03:38:04Z Dielectric resonator reflectarray antenna in Ku-Band 2014-07 Dzulkipli, Nur Izyani TK5101-6720 Telecommunication Direct broadcasting satellite has become a vital system in satellite communication globally especially for digital broadcasting purposes. Currently, a parabolic antenna is normally used for this application, however the advantages of reflectarray which is flat in shape and possibility for beam steering capability make the reflectarray antenna is one of the interesting topic to be studied. At the current time, many reflectarrays are based on microstrip technology. Nevertheless, at high frequency the conductor loss is high and the antenna efficiency will be reduced. An interesting solution is to use dielectric resonator antennas (DRAs) as the reflectarray elements. In facts, DRA can give low loss and high bandwidth. In this thesis, firstly four different slots with alphabets underneath the rectangular DRA have been investigated as unit-cell for reflectarray. A new structure of rectangular DRA with C-shaped slot unit-cell has been proposed which can give high phase range (321.9o) and low loss (0.3685o). This structure is then being validated experimentally in Ku-Band. Next, the mutual coupling effects between unit-cell in the reflectarray are studied and a simulation technique based on Finite Different Time Domain (FDTD) is proposed. By doing so, this simulation technique is most suitable to predict the actual reflectarray radiation pattern. Finally, the reflectarray antenna composed of 24 x 24 unit-cells based on DRA with C-shaped slot is proposed at 12 GHz. 2014-07 Thesis http://eprints.utm.my/id/eprint/48844/ http://eprints.utm.my/id/eprint/48844/25/NurIzyaniDzulkipliMFKE2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85284 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 Dzulkipli, Nur Izyani Dielectric resonator reflectarray antenna in Ku-Band
description	Direct broadcasting satellite has become a vital system in satellite communication globally especially for digital broadcasting purposes. Currently, a parabolic antenna is normally used for this application, however the advantages of reflectarray which is flat in shape and possibility for beam steering capability make the reflectarray antenna is one of the interesting topic to be studied. At the current time, many reflectarrays are based on microstrip technology. Nevertheless, at high frequency the conductor loss is high and the antenna efficiency will be reduced. An interesting solution is to use dielectric resonator antennas (DRAs) as the reflectarray elements. In facts, DRA can give low loss and high bandwidth. In this thesis, firstly four different slots with alphabets underneath the rectangular DRA have been investigated as unit-cell for reflectarray. A new structure of rectangular DRA with C-shaped slot unit-cell has been proposed which can give high phase range (321.9o) and low loss (0.3685o). This structure is then being validated experimentally in Ku-Band. Next, the mutual coupling effects between unit-cell in the reflectarray are studied and a simulation technique based on Finite Different Time Domain (FDTD) is proposed. By doing so, this simulation technique is most suitable to predict the actual reflectarray radiation pattern. Finally, the reflectarray antenna composed of 24 x 24 unit-cells based on DRA with C-shaped slot is proposed at 12 GHz.
format	Thesis
qualification_level	Master's degree
author	Dzulkipli, Nur Izyani
author_facet	Dzulkipli, Nur Izyani
author_sort	Dzulkipli, Nur Izyani
title	Dielectric resonator reflectarray antenna in Ku-Band
title_short	Dielectric resonator reflectarray antenna in Ku-Band
title_full	Dielectric resonator reflectarray antenna in Ku-Band
title_fullStr	Dielectric resonator reflectarray antenna in Ku-Band
title_full_unstemmed	Dielectric resonator reflectarray antenna in Ku-Band
title_sort	dielectric resonator reflectarray antenna in ku-band
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2014
url	http://eprints.utm.my/id/eprint/48844/25/NurIzyaniDzulkipliMFKE2014.pdf
_version_	1747817485488357376

Dielectric resonator reflectarray antenna in Ku-Band

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