Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop

The main objective of this project is to develop a microwave free-space measurement system in the frequency range of 8.0 to 12.5 GHz (X-Band) to measure reflection and transmission coefficients , Sn and S2i of planar samples such as Polyvinyl-Chloride (PVC), Polypropylene (PP), Nylon, Polyethylene (...

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主要作者: Mohamad Ali Yakop, Suhardi
格式: Thesis
语言:English
出版: 1997
在线阅读:https://ir.uitm.edu.my/id/eprint/100737/1/100737.pdf
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spelling my-uitm-ir.1007372024-08-17T14:51:39Z Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop 1997 Mohamad Ali Yakop, Suhardi The main objective of this project is to develop a microwave free-space measurement system in the frequency range of 8.0 to 12.5 GHz (X-Band) to measure reflection and transmission coefficients , Sn and S2i of planar samples such as Polyvinyl-Chloride (PVC), Polypropylene (PP), Nylon, Polyethylene (PE), Polyurethane and Teflon. The complex electric permittivity (s *) and complex magnetic permeability (^i*) are calculated from the measured values Sn and S2] by using a C++ language program. The measurement system consist of transmit and receive horn lens antennas, Wiltron Vector Network Analyzer, mode transitions and a printer. Diffraction effects at the edges of the samples are minimized by using spot-focusing lens antennas. Error due to multiple reflections between antennas via the surface of the sample are corrected by using a free-space LRL (Line, Reflect, Line) calibration technique. 1997 Thesis https://ir.uitm.edu.my/id/eprint/100737/ https://ir.uitm.edu.my/id/eprint/100737/1/100737.pdf text en public degree Universiti Teknologi MARA (UiTM) Faculty of Electrical Engineering
institution Universiti Teknologi MARA
collection UiTM Institutional Repository
language English
description The main objective of this project is to develop a microwave free-space measurement system in the frequency range of 8.0 to 12.5 GHz (X-Band) to measure reflection and transmission coefficients , Sn and S2i of planar samples such as Polyvinyl-Chloride (PVC), Polypropylene (PP), Nylon, Polyethylene (PE), Polyurethane and Teflon. The complex electric permittivity (s *) and complex magnetic permeability (^i*) are calculated from the measured values Sn and S2] by using a C++ language program. The measurement system consist of transmit and receive horn lens antennas, Wiltron Vector Network Analyzer, mode transitions and a printer. Diffraction effects at the edges of the samples are minimized by using spot-focusing lens antennas. Error due to multiple reflections between antennas via the surface of the sample are corrected by using a free-space LRL (Line, Reflect, Line) calibration technique.
format Thesis
qualification_level Bachelor degree
author Mohamad Ali Yakop, Suhardi
spellingShingle Mohamad Ali Yakop, Suhardi
Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop
author_facet Mohamad Ali Yakop, Suhardi
author_sort Mohamad Ali Yakop, Suhardi
title Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop
title_short Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop
title_full Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop
title_fullStr Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop
title_full_unstemmed Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop
title_sort microwave nondestructive testing of composite materials using a free space technique / suhardi mohamad ali yakop
granting_institution Universiti Teknologi MARA (UiTM)
granting_department Faculty of Electrical Engineering
publishDate 1997
url https://ir.uitm.edu.my/id/eprint/100737/1/100737.pdf
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