Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid

This project involves a free-space measurement system operating in the 7.5-12.5 GHz frequency range to measure the reflection and transmission coefficients, Sn and S21, of planar samples. It involves measurements of the dielectric constant, loss factor and loss tangent of the rubber composites. The...

Full description

Saved in:

Bibliographic Details
Main Author:	Abdul Majid, Mohd Fiza
Format:	Thesis
Language:	English
Published:	2003
Subjects:	Nonionizing radiation Including electromagnetic waves, radiofrequency radiation, and microwaves
Online Access:	https://ir.uitm.edu.my/id/eprint/69529/1/69529.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-uitm-ir.69529
record_format	uketd_dc
spelling	my-uitm-ir.695292023-03-08T09:14:37Z Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid 2003 Abdul Majid, Mohd Fiza Nonionizing radiation. Including electromagnetic waves, radiofrequency radiation, and microwaves This project involves a free-space measurement system operating in the 7.5-12.5 GHz frequency range to measure the reflection and transmission coefficients, Sn and S21, of planar samples. It involves measurements of the dielectric constant, loss factor and loss tangent of the rubber composites. The complex electric permittivity and the magnetic permeability are calculated from the measured values of Sn and S21 using FORTRAN 77 and Borlan C++ computer programs. The measurement system consists of transmit and receive horn lens antennas, a network analyzer, mode transitions and a computer. Diffraction effects at the edges of the samples are minimized by using spot focusing lens antennas. Errors due to multiple reflections between antennas via the surface of the samples are corrected by using a free-space LRL (line, reflect, line) calibration technique. Because of the samples used in this measurement is thin and flexible, it had to be sandwiched between two half-wavelength (at midband) quartz plates, to eliminates the effects of sagging. Results are reported in the operating frequency as stated above for the material used which is Teflon. To eliminate the effect of Teflon, Borlan C++ computer program is used. 2003 Thesis https://ir.uitm.edu.my/id/eprint/69529/ https://ir.uitm.edu.my/id/eprint/69529/1/69529.pdf text en public degree Universiti Teknologi MARA (UiTM) Faculty of Electrical Engineering Ghodgaonkar, Deepak Kumar
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Ghodgaonkar, Deepak Kumar
topic	Nonionizing radiation Including electromagnetic waves, radiofrequency radiation, and microwaves
spellingShingle	Nonionizing radiation Including electromagnetic waves, radiofrequency radiation, and microwaves Abdul Majid, Mohd Fiza Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid
description	This project involves a free-space measurement system operating in the 7.5-12.5 GHz frequency range to measure the reflection and transmission coefficients, Sn and S21, of planar samples. It involves measurements of the dielectric constant, loss factor and loss tangent of the rubber composites. The complex electric permittivity and the magnetic permeability are calculated from the measured values of Sn and S21 using FORTRAN 77 and Borlan C++ computer programs. The measurement system consists of transmit and receive horn lens antennas, a network analyzer, mode transitions and a computer. Diffraction effects at the edges of the samples are minimized by using spot focusing lens antennas. Errors due to multiple reflections between antennas via the surface of the samples are corrected by using a free-space LRL (line, reflect, line) calibration technique. Because of the samples used in this measurement is thin and flexible, it had to be sandwiched between two half-wavelength (at midband) quartz plates, to eliminates the effects of sagging. Results are reported in the operating frequency as stated above for the material used which is Teflon. To eliminate the effect of Teflon, Borlan C++ computer program is used.
format	Thesis
qualification_level	Bachelor degree
author	Abdul Majid, Mohd Fiza
author_facet	Abdul Majid, Mohd Fiza
author_sort	Abdul Majid, Mohd Fiza
title	Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid
title_short	Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid
title_full	Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid
title_fullStr	Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid
title_full_unstemmed	Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid
title_sort	free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / mohd fiza abdul majid
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Electrical Engineering
publishDate	2003
url	https://ir.uitm.edu.my/id/eprint/69529/1/69529.pdf
_version_	1783735891790921728

Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid

Similar Items