Design and development of microwave absorber using waste materials

Doctor of Philosophy in Communication Engineering

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Bibliographic Details
Main Author:	Liyana, Zahid
Other Authors:	Muzammil, Jusoh, Dr.
Format:	Thesis
Language:	English
Published:	Universiti Malaysia Perlis (UniMAP) 2017
Subjects:	Electromagnetic compatibility Electromagnetic interference Microwave detectors Absorption Agricultural wastes Sugarcane bagasse Microwave absorber
Online Access:	http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78025
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Institution:	Universiti Malaysia Perlis
Language:	English

id	my.unimap-78025
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spelling	my.unimap-780252023-03-10T03:02:39Z Design and development of microwave absorber using waste materials Liyana, Zahid Muzammil, Jusoh, Dr. Electromagnetic compatibility Electromagnetic interference Microwave detectors Absorption Agricultural wastes Sugarcane bagasse Microwave absorber Doctor of Philosophy in Communication Engineering Sugarcane bagasse is a potential agricultural waste to design the pyramidal microwave absorber to be used in radio frequency (RF) anechoic chamber for testing application. An RF anechoic chamber is a shielded room covered with absorbers to eliminate unwanted reflection signal. In this work, sugarcane bagasse from the sugar industry and rubber tire dust from tire wear have been used. Both of the wastes have lossy carbon contents naturally, which has made them suitable as the raw materials for the fabrication of the low cost microwave absorbers. The dielectric constant of the sugarcane bagasse had been measured using the Dielectric Probe Technique and Software of Agilent 85071E using Transmission Line Technique. Microwave absorbers are made of two main components, a filler material that does the absorption, and a material matrix to hold the filler. In dielectric materials, the most crucial properties that enable them to be applicable as microwave absorbers are the dielectric constant and the loss factor which is the dissipation of energy in the material. Generally, dielectric material absorbers are fabricated by the combination of fillers in a polymer matrix. In this work, the fillers are the agricultural waste which is sugarcane bagasse (SCB) and rubber tire dust (RTD) from tire wear whereas the polymer matrix is unsaturated Polyester Resin RP9509 (UPR) which is rigid, flexible and electromagnetically transparent polymer. In this work, the sugarcane bagasse also has been mixed with rubber tire dust (RTD) to investigate their performance. The microwave absorber using sugarcane bagasse had been designed and simulated in the CST Microwave studio software. The measurement of waveguide technique has been used to check the reflectivity performance. The microwave absorber has been investigated in microwave frequency range between 1 GHz to 18 GHz. The results show that the sugarcane bagasse has the potential used as the base material in developing the microwave absorber and can operate in that range of frequency successfully. The adding of the filler which is rubber tire dust increased the performance of the microwave absorber. These absorbers were designed on the basis of the wave attenuation and depth of penetration data and their EMC performance was evaluated in terms of bi-static reflectivity performance. The performance of the absorbers was found to be below -10 dB. The different concentration of the filler were being measured and the reflectivity was found to be better then -20 dB when the increasing value of rubber tire dust were added. 2017 2023-03-07T01:06:15Z 2023-03-07T01:06:15Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78025 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) School of Computer and Communication Engineering
institution	Universiti Malaysia Perlis
building	UniMAP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Perlis
content_source	UniMAP Library Digital Repository
url_provider	http://dspace.unimap.edu.my/
language	English
topic	Electromagnetic compatibility Electromagnetic interference Microwave detectors Absorption Agricultural wastes Sugarcane bagasse Microwave absorber
spellingShingle	Electromagnetic compatibility Electromagnetic interference Microwave detectors Absorption Agricultural wastes Sugarcane bagasse Microwave absorber Liyana, Zahid Design and development of microwave absorber using waste materials
description	Doctor of Philosophy in Communication Engineering
author2	Muzammil, Jusoh, Dr.
author_facet	Muzammil, Jusoh, Dr. Liyana, Zahid
format	Thesis
author	Liyana, Zahid
author_sort	Liyana, Zahid
title	Design and development of microwave absorber using waste materials
title_short	Design and development of microwave absorber using waste materials
title_full	Design and development of microwave absorber using waste materials
title_fullStr	Design and development of microwave absorber using waste materials
title_full_unstemmed	Design and development of microwave absorber using waste materials
title_sort	design and development of microwave absorber using waste materials
publisher	Universiti Malaysia Perlis (UniMAP)
publishDate	2017
url	http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78025
_version_	1772813090812854272

Design and development of microwave absorber using waste materials

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