Frequency agile antenna integrated with band pass filter

In the era of wireless communication, new problem arises when user’s attention increases together with new development of wireless applications. The limited frequency spectrum, which allows only one application to operate at the same time and frequency, has created resource issue for the wireless co...

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Main Author:	Mohamad Dahlan, Ahmad Marwan
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/42129/1/AhmadMarwanMohamadDahlanMFKE2013.pdf
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id	my-utm-ep.42129
record_format	uketd_dc
spelling	my-utm-ep.421292017-07-10T07:47:05Z Frequency agile antenna integrated with band pass filter 2013 Mohamad Dahlan, Ahmad Marwan TK Electrical engineering. Electronics Nuclear engineering In the era of wireless communication, new problem arises when user’s attention increases together with new development of wireless applications. The limited frequency spectrum, which allows only one application to operate at the same time and frequency, has created resource issue for the wireless communication industry. Hence, new frequency agile technologies such as Software Define Radio and Cognitive Radio systems are being developed. One of the requirements of this type of application is an antenna system that is able to change its operating frequency as instructed by the back end system. This research explores the possibility of integrating band pass filters to manipulate the operating frequency of a broadband antenna. RF diode, inductors and capacitors are used as switching mechanism to actively change the operating frequency. Based on the spectrum allocation in Malaysia, frequency range from 1GHz to 6GHz was chosen due to the allocation of many types of communication applications such as mobile applications, unlicensed band and satellite communication. A proof of concept was done for active switching at 1.3GHz and 2GHz of the antenna prototype. Another structure was fabricated to implement frequency reconfigurability operation at 1.3GHz, 2GHz, 3GHz, 4GHz, 5GHz and 6GHz using copper strips instead of active elements. Simulated and measured results showed good agreement for 1.3GHz – 2GHz active switching prototype while 1.3GHz – 6GHz copper strip prototype shows minor shifts and degradation at high frequencies in measured result. From the data collected in this research, band pass filter integrated antenna shows high potential to be used as frequency agile antenna with active switching capability. The results from simulation and measurement of fabricated structures are analyzed and discussed in detail in this thesis. This research contributes to the development of frequency agile antenna design for future frequency agile application. 2013 Thesis http://eprints.utm.my/id/eprint/42129/ http://eprints.utm.my/id/eprint/42129/1/AhmadMarwanMohamadDahlanMFKE2013.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:77745?queryType=vitalDismax&query=Frequency+agile+antenna+integrated+with+band+pass+filter&public=true masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Mohamad Dahlan, Ahmad Marwan Frequency agile antenna integrated with band pass filter
description	In the era of wireless communication, new problem arises when user’s attention increases together with new development of wireless applications. The limited frequency spectrum, which allows only one application to operate at the same time and frequency, has created resource issue for the wireless communication industry. Hence, new frequency agile technologies such as Software Define Radio and Cognitive Radio systems are being developed. One of the requirements of this type of application is an antenna system that is able to change its operating frequency as instructed by the back end system. This research explores the possibility of integrating band pass filters to manipulate the operating frequency of a broadband antenna. RF diode, inductors and capacitors are used as switching mechanism to actively change the operating frequency. Based on the spectrum allocation in Malaysia, frequency range from 1GHz to 6GHz was chosen due to the allocation of many types of communication applications such as mobile applications, unlicensed band and satellite communication. A proof of concept was done for active switching at 1.3GHz and 2GHz of the antenna prototype. Another structure was fabricated to implement frequency reconfigurability operation at 1.3GHz, 2GHz, 3GHz, 4GHz, 5GHz and 6GHz using copper strips instead of active elements. Simulated and measured results showed good agreement for 1.3GHz – 2GHz active switching prototype while 1.3GHz – 6GHz copper strip prototype shows minor shifts and degradation at high frequencies in measured result. From the data collected in this research, band pass filter integrated antenna shows high potential to be used as frequency agile antenna with active switching capability. The results from simulation and measurement of fabricated structures are analyzed and discussed in detail in this thesis. This research contributes to the development of frequency agile antenna design for future frequency agile application.
format	Thesis
qualification_level	Master's degree
author	Mohamad Dahlan, Ahmad Marwan
author_facet	Mohamad Dahlan, Ahmad Marwan
author_sort	Mohamad Dahlan, Ahmad Marwan
title	Frequency agile antenna integrated with band pass filter
title_short	Frequency agile antenna integrated with band pass filter
title_full	Frequency agile antenna integrated with band pass filter
title_fullStr	Frequency agile antenna integrated with band pass filter
title_full_unstemmed	Frequency agile antenna integrated with band pass filter
title_sort	frequency agile antenna integrated with band pass filter
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2013
url	http://eprints.utm.my/id/eprint/42129/1/AhmadMarwanMohamadDahlanMFKE2013.pdf
_version_	1747816696823939072

Frequency agile antenna integrated with band pass filter

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