A prelimenary study on microwave characterization of mangoes ripeness at 18 TO 26GHz (K-BAND) / Azhar Saffuan Ramli

Microwave nondestructive testing of materials is an important science which involve development of sensors/probes, methods and calibration techniques for detection of flaws, cracks, defects, voids, inhomogeinities and moisture content This project presents a microwave non-destructive testing to dete...

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Main Author:	Ramli, Azhar Saffuan
Format:	Thesis
Language:	English
Published:	2009
Subjects:	Microwaves Including microwave circuits
Online Access:	https://ir.uitm.edu.my/id/eprint/68999/1/68999.pdf
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id	my-uitm-ir.68999
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spelling	my-uitm-ir.689992023-01-11T02:00:43Z A prelimenary study on microwave characterization of mangoes ripeness at 18 TO 26GHz (K-BAND) / Azhar Saffuan Ramli 2009 Ramli, Azhar Saffuan Microwaves. Including microwave circuits Microwave nondestructive testing of materials is an important science which involve development of sensors/probes, methods and calibration techniques for detection of flaws, cracks, defects, voids, inhomogeinities and moisture content This project presents a microwave non-destructive testing to determine the ripeness of mangoes at frequency range 18 to 26GHz (K-Band). The mangoes are selected to be measure using this technique because of its surface is quite planar. This project presents a microwave free space technique for the measurement the mangoes ripeness at frequency range 18 to 26 GHz (K-Band). The component of this free space measurement system (FSMM) consists of spot focusing Gaussian Optics Lens (GOA) antennas, the Vector Network Analyzer and the computer. The thru, reflect and line (TRL) calibration technique were used to eliminate the effect of undesirable multiple reflection. The results are compared between measurement and data and presented in the frequency range of 18 to 26GHz. The samples are sandwiched between two Perspex plates (one plate is fixed and the other is moveable) for matching to free space. Because of the far field focusing ability of horn lens antennas free space measurement can be made at microwave frequency in a relatively compact and simple measurement set up. The dielectric constant for ripe and for unripe mangoes samples is in between 26.1 to 29.5. The loss tangent (tan 5) is average 1.14 to 1.18 for both ripe and unripe mangoes samples. The slight differences could be due to errors in the magnitude and phase of Sll and S21, surface of mangoes and the air-gap effect of the sample assembly. Loss factor, loss tangent, and conductivity of samples were obtained by using formula. These data are presented in tabular form as shown in the appendix and reported in the range of frequency 18 to 26 GHz. 2009 Thesis https://ir.uitm.edu.my/id/eprint/68999/ https://ir.uitm.edu.my/id/eprint/68999/1/68999.pdf text en public degree Universiti Teknologi MARA (UiTM) Faculty of Electrical Engineering Abd Khalid, Farid
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Abd Khalid, Farid
topic	Microwaves Including microwave circuits
spellingShingle	Microwaves Including microwave circuits Ramli, Azhar Saffuan A prelimenary study on microwave characterization of mangoes ripeness at 18 TO 26GHz (K-BAND) / Azhar Saffuan Ramli
description	Microwave nondestructive testing of materials is an important science which involve development of sensors/probes, methods and calibration techniques for detection of flaws, cracks, defects, voids, inhomogeinities and moisture content This project presents a microwave non-destructive testing to determine the ripeness of mangoes at frequency range 18 to 26GHz (K-Band). The mangoes are selected to be measure using this technique because of its surface is quite planar. This project presents a microwave free space technique for the measurement the mangoes ripeness at frequency range 18 to 26 GHz (K-Band). The component of this free space measurement system (FSMM) consists of spot focusing Gaussian Optics Lens (GOA) antennas, the Vector Network Analyzer and the computer. The thru, reflect and line (TRL) calibration technique were used to eliminate the effect of undesirable multiple reflection. The results are compared between measurement and data and presented in the frequency range of 18 to 26GHz. The samples are sandwiched between two Perspex plates (one plate is fixed and the other is moveable) for matching to free space. Because of the far field focusing ability of horn lens antennas free space measurement can be made at microwave frequency in a relatively compact and simple measurement set up. The dielectric constant for ripe and for unripe mangoes samples is in between 26.1 to 29.5. The loss tangent (tan 5) is average 1.14 to 1.18 for both ripe and unripe mangoes samples. The slight differences could be due to errors in the magnitude and phase of Sll and S21, surface of mangoes and the air-gap effect of the sample assembly. Loss factor, loss tangent, and conductivity of samples were obtained by using formula. These data are presented in tabular form as shown in the appendix and reported in the range of frequency 18 to 26 GHz.
format	Thesis
qualification_level	Bachelor degree
author	Ramli, Azhar Saffuan
author_facet	Ramli, Azhar Saffuan
author_sort	Ramli, Azhar Saffuan
title	A prelimenary study on microwave characterization of mangoes ripeness at 18 TO 26GHz (K-BAND) / Azhar Saffuan Ramli
title_short	A prelimenary study on microwave characterization of mangoes ripeness at 18 TO 26GHz (K-BAND) / Azhar Saffuan Ramli
title_full	A prelimenary study on microwave characterization of mangoes ripeness at 18 TO 26GHz (K-BAND) / Azhar Saffuan Ramli
title_fullStr	A prelimenary study on microwave characterization of mangoes ripeness at 18 TO 26GHz (K-BAND) / Azhar Saffuan Ramli
title_full_unstemmed	A prelimenary study on microwave characterization of mangoes ripeness at 18 TO 26GHz (K-BAND) / Azhar Saffuan Ramli
title_sort	prelimenary study on microwave characterization of mangoes ripeness at 18 to 26ghz (k-band) / azhar saffuan ramli
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Electrical Engineering
publishDate	2009
url	https://ir.uitm.edu.my/id/eprint/68999/1/68999.pdf
_version_	1783735830295085056

A prelimenary study on microwave characterization of mangoes ripeness at 18 TO 26GHz (K-BAND) / Azhar Saffuan Ramli

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