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Multi-band low-profile antennas for WLAN and WiMAX applications
Dissertation (MEng)--University of Pretoria, 2018.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2019
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| _version_ | 1867613486675132416 |
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| access_status_str | Open Access |
| author2 | Odendaal, J.W. (Johann Wilhelm) |
| author_browse | Odendaal, J.W. (Johann Wilhelm) |
| author_facet | Odendaal, J.W. (Johann Wilhelm) |
| collection | Thesis |
| dc_rights_str_mv | © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MEng)--University of Pretoria, 2018. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/70977 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:36:55.109Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/70977 Multi-band low-profile antennas for WLAN and WiMAX applications Odendaal, J.W. (Johann Wilhelm) u13014422@tuks.co.za Joubert, Johan Coetzee, Ernst Willem UCTD Dissertation (MEng)--University of Pretoria, 2018. The demand for modern wireless communication systems have grown at a remarkable rate and the Wireless Local Area Network (WLAN) and Worldwide Interoperability for Microwave Access (WiMAX) frequency bands have been recognized as a cost-effective and reliable solution for high-speed wireless communication. The WLAN frequency bands are from 2.4 – 2.483 GHz, 5.15 – 5.25 GHz and 5.725 – 5.825 GHz, while the WiMAX frequency band is from 3.4 – 3.6 GHz, which are for the IEEE802.11a, IEEE802.11b, IEEE802.16d and IEEE802.16e standards. The objective of this dissertation was to develop a new and improved high gain WLAN antenna with a low profile and directional radiation pattern. The proposed antennas were based on an ultra-wideband slot radiating element, which consisted of a microstrip feedline with a strip-slot pair. The work also required the design of an artificial magnetic conductor (AMC) surface, to achieve a low profile antenna with high gain. The antenna combined with the AMC reflector, achieved a high gain and a directional radiation pattern. The design of the proposed antenna resulted in a triple-band WLAN antenna with an overall size of 80×80×10.01 mm3 with an average gain of 10.2 dBi across the WLAN bands. The antenna also achieved a directional radiation pattern with a front-to-back better than 24 dB in the WLAN bands. The design of a quad-band WLAN and WiMAX antenna was also performed. The quad-band antenna operated in the 2.4 GHz, 5.2 GHz and 5.8 GHz WLAN bands as well as the 3.5 GHz WiMAX band. The antenna had an overall size of 80×80×10.01 mm3 with an average gain of 9.3 dBi across the WLAN and WiMAX frequency bands. The antenna also achieved a directional radiation pattern with a front-to-back better than 22 dB in the WLAN and WiMAX bands. The simulated and measured results for both antennas were compared and have a good agreement. The results achieved by the proposed triple- and quad-band antennas exceeded the performance of other high gain and directional WLAN antennas found in the literature. Comparing the results of the quad-band antenna with a strip-slot antenna found in literature, the overall volume and average gain has improved by 34.7% and 2.2%, respectively. Electrical, Electronic and Computer Engineering MEng Unrestricted 2019-08-12T11:18:41Z 2019-08-12T11:18:41Z 2019/04/10 2018 Dissertation Coetzee, EW 2018, Multi-band low-profile antennas for WLAN and WiMAX applications, MEng Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/70977> A2019 http://hdl.handle.net/2263/70977 en © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Multi-band low-profile antennas for WLAN and WiMAX applications |
| title | Multi-band low-profile antennas for WLAN and WiMAX applications |
| title_full | Multi-band low-profile antennas for WLAN and WiMAX applications |
| title_fullStr | Multi-band low-profile antennas for WLAN and WiMAX applications |
| title_full_unstemmed | Multi-band low-profile antennas for WLAN and WiMAX applications |
| title_short | Multi-band low-profile antennas for WLAN and WiMAX applications |
| title_sort | multi band low profile antennas for wlan and wimax applications |
| topic | UCTD |
| url | http://hdl.handle.net/2263/70977 |