A design of slotted elliptical antenna for wideband applications / Adznina Eberahim

In choosing an antenna topology for wideband design, several factors must be taken into account including physical profile, compatibility, impedance bandwidth, radiation efficiency, and radiation pattern. In this paper, a slotted elliptical wideband antenna is presented. It originates from conventio...

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Main Author:	Eberahim, Adznina
Format:	Thesis
Language:	English
Published:	2011
Subjects:	Microwave communication systems Antennas
Online Access:	https://ir.uitm.edu.my/id/eprint/68357/1/68357.pdf
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id	my-uitm-ir.68357
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spelling	my-uitm-ir.683572022-11-04T02:37:48Z A design of slotted elliptical antenna for wideband applications / Adznina Eberahim 2011 Eberahim, Adznina Microwave communication systems Antennas In choosing an antenna topology for wideband design, several factors must be taken into account including physical profile, compatibility, impedance bandwidth, radiation efficiency, and radiation pattern. In this paper, a slotted elliptical wideband antenna is presented. It originates from conventional ellipse shape and is realized by adding a slot for patch. The wideband behavior is due to the fact that the currents along the edges of the slots introduce an additional resonance, which, in conjunction with the resonance of the main patch, produce an overall wideband frequency response characteristic. The slots also appear to introduce a capacitive reactance which counteracts the inductive reactance of the feed. Thus, the bandwidth broadening comes from the patch and the slot, coupled together to form two resonances. The characteristic and performance of the slotted elliptical antenna was simulated by using the commercially available CST Microwave. This antenna is fed by 5 Ofl micro strip-line feed and was fabricated using FR4 with the dielectric constant, 6,-equal to 4.7, tangent delta electric, 5 is 0.019 and the height of the substrate, h is 1.6 mm. A Vector Network Analyzer (VNA) was used to analyze the prototype antenna. The measured return loss (Sn) of this proposed antenna is also presented as well. This antenna was a good choice since it exhibited a return loss less than -lOdB within wideband frequency range of 2.5 GHz to 6.5 GHz, voltage standing wave ratio (VSWR) less than 2, provided omnidirectional radiation pattern at 3.97 GHz, directional radiation pattern at 5.5 GHz and value of radiation efficiency is more than 70%. Furthermore, it was low-profile and compact antenna. 2011 Thesis https://ir.uitm.edu.my/id/eprint/68357/ https://ir.uitm.edu.my/id/eprint/68357/1/68357.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty Electrical Engineering Ali, Mohd Tarmizi
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Ali, Mohd Tarmizi
topic	Microwave communication systems Antennas
spellingShingle	Microwave communication systems Antennas Eberahim, Adznina A design of slotted elliptical antenna for wideband applications / Adznina Eberahim
description	In choosing an antenna topology for wideband design, several factors must be taken into account including physical profile, compatibility, impedance bandwidth, radiation efficiency, and radiation pattern. In this paper, a slotted elliptical wideband antenna is presented. It originates from conventional ellipse shape and is realized by adding a slot for patch. The wideband behavior is due to the fact that the currents along the edges of the slots introduce an additional resonance, which, in conjunction with the resonance of the main patch, produce an overall wideband frequency response characteristic. The slots also appear to introduce a capacitive reactance which counteracts the inductive reactance of the feed. Thus, the bandwidth broadening comes from the patch and the slot, coupled together to form two resonances. The characteristic and performance of the slotted elliptical antenna was simulated by using the commercially available CST Microwave. This antenna is fed by 5 Ofl micro strip-line feed and was fabricated using FR4 with the dielectric constant, 6,-equal to 4.7, tangent delta electric, 5 is 0.019 and the height of the substrate, h is 1.6 mm. A Vector Network Analyzer (VNA) was used to analyze the prototype antenna. The measured return loss (Sn) of this proposed antenna is also presented as well. This antenna was a good choice since it exhibited a return loss less than -lOdB within wideband frequency range of 2.5 GHz to 6.5 GHz, voltage standing wave ratio (VSWR) less than 2, provided omnidirectional radiation pattern at 3.97 GHz, directional radiation pattern at 5.5 GHz and value of radiation efficiency is more than 70%. Furthermore, it was low-profile and compact antenna.
format	Thesis
qualification_level	Master's degree
author	Eberahim, Adznina
author_facet	Eberahim, Adznina
author_sort	Eberahim, Adznina
title	A design of slotted elliptical antenna for wideband applications / Adznina Eberahim
title_short	A design of slotted elliptical antenna for wideband applications / Adznina Eberahim
title_full	A design of slotted elliptical antenna for wideband applications / Adznina Eberahim
title_fullStr	A design of slotted elliptical antenna for wideband applications / Adznina Eberahim
title_full_unstemmed	A design of slotted elliptical antenna for wideband applications / Adznina Eberahim
title_sort	design of slotted elliptical antenna for wideband applications / adznina eberahim
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty Electrical Engineering
publishDate	2011
url	https://ir.uitm.edu.my/id/eprint/68357/1/68357.pdf
_version_	1783735772656959488

A design of slotted elliptical antenna for wideband applications / Adznina Eberahim

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