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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...

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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
https://ir.uitm.edu.my/id/eprint/69529/
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spelling my.uitm.ir.695292023-03-08T09:14:37Z https://ir.uitm.edu.my/id/eprint/69529/ Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid 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 NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/69529/1/69529.pdf Free-space measurement of complex permittivity and complex permeability of polar and non-polar rubber composites at microwave frequency / Mohd Fiza Abdul Majid. (2003) Degree thesis, thesis, Universiti Teknologi MARA (UiTM).
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
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
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
publishDate 2003
url https://ir.uitm.edu.my/id/eprint/69529/1/69529.pdf
https://ir.uitm.edu.my/id/eprint/69529/
_version_ 1761622297297289216
score 13.211869

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