Development of metal mountable RFID tag antenna in ultra high frequency range / Najwa Mohd Faudzi

Development of metal mountable RFID tag antenna in ultra high frequency range / Najwa Mohd Faudzi

In recent years, Radio Frequency Identification (RFID) technology is highly demanded in various applications, requiring a rapid development in the RFID technology. The performance o f the RFID system mainly depends on the RFID tag, as the tag will be attached on the items or objects that need to be...

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Main Author: Mohd Faudzi, Najwa
Format: Thesis
Language:English
Published: 2015
Online Access:https://ir.uitm.edu.my/id/eprint/18412/2/TM_NAJWA%20MOHD%20FAUDZI%20EE%2015_5.pdf
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spelling my-uitm-ir.184122022-03-10T06:56:04Z Development of metal mountable RFID tag antenna in ultra high frequency range / Najwa Mohd Faudzi 2015 Mohd Faudzi, Najwa In recent years, Radio Frequency Identification (RFID) technology is highly demanded in various applications, requiring a rapid development in the RFID technology. The performance o f the RFID system mainly depends on the RFID tag, as the tag will be attached on the items or objects that need to be identified. The research described in this thesis focuses on the development of the tag antenna designs to meet the requirements o f certain applications which are small size and insensitive to metal object. In this project, three designs o f UHF-RFID tag antenna were proposed; namely a compact dipole tag antenna, metal mountable meander feed line tag antenna and metal mountable ladder feed line tag antenna. The Design 1 tag antenna has obtained a size reduction o f 70% from the straight half wavelength dipole antenna through the implementation of two miniaturization methods, which are meandering and capacitive tip-loading. However, high sensitivity of the tag to the metal objects attached leads to the formation of the Design 2 tag antenna, which included a ground plane in the antenna structure. The Design 2 tag antenna was then improved to the Design 3 tag antenna, which has smaller size and better reading range, through the implementation of capacitive tip-loading structure and ladder feed line respectively. In order to easily match the impedance o f the antenna with the chip, a T-matching technique has been inserted in all three tag antenna designs. The simulation process was carried out using CST Studio Suite software, while the measurement of S n , antenna impedance and reading range was done using fabricated jig, Image method, Vector Network Analyzer and RFID reader. From measurement, the Design 1 tag antenna has achieved the longest reading range in free air with the value o f 9.6 in, but failed to be detected when attached on metal object. In contrast, Design 2 and Design 3 tag antennas can be detected in both conditions with the read range value of 2.2 m and 2.3 m in free air, while on metal object the read range is 2.0 m and 2.2 m respectively. 2015 Thesis https://ir.uitm.edu.my/id/eprint/18412/ https://ir.uitm.edu.my/id/eprint/18412/2/TM_NAJWA%20MOHD%20FAUDZI%20EE%2015_5.pdf text en public mphil masters Universiti Teknologi MARA Faculty of Electrical Engineering
institution Universiti Teknologi MARA
collection UiTM Institutional Repository
language English
description In recent years, Radio Frequency Identification (RFID) technology is highly demanded in various applications, requiring a rapid development in the RFID technology. The performance o f the RFID system mainly depends on the RFID tag, as the tag will be attached on the items or objects that need to be identified. The research described in this thesis focuses on the development of the tag antenna designs to meet the requirements o f certain applications which are small size and insensitive to metal object. In this project, three designs o f UHF-RFID tag antenna were proposed; namely a compact dipole tag antenna, metal mountable meander feed line tag antenna and metal mountable ladder feed line tag antenna. The Design 1 tag antenna has obtained a size reduction o f 70% from the straight half wavelength dipole antenna through the implementation of two miniaturization methods, which are meandering and capacitive tip-loading. However, high sensitivity of the tag to the metal objects attached leads to the formation of the Design 2 tag antenna, which included a ground plane in the antenna structure. The Design 2 tag antenna was then improved to the Design 3 tag antenna, which has smaller size and better reading range, through the implementation of capacitive tip-loading structure and ladder feed line respectively. In order to easily match the impedance o f the antenna with the chip, a T-matching technique has been inserted in all three tag antenna designs. The simulation process was carried out using CST Studio Suite software, while the measurement of S n , antenna impedance and reading range was done using fabricated jig, Image method, Vector Network Analyzer and RFID reader. From measurement, the Design 1 tag antenna has achieved the longest reading range in free air with the value o f 9.6 in, but failed to be detected when attached on metal object. In contrast, Design 2 and Design 3 tag antennas can be detected in both conditions with the read range value of 2.2 m and 2.3 m in free air, while on metal object the read range is 2.0 m and 2.2 m respectively.
format Thesis
qualification_name Master of Philosophy (M.Phil.)
qualification_level Master's degree
author Mohd Faudzi, Najwa
spellingShingle Mohd Faudzi, Najwa
Development of metal mountable RFID tag antenna in ultra high frequency range / Najwa Mohd Faudzi
author_facet Mohd Faudzi, Najwa
author_sort Mohd Faudzi, Najwa
title Development of metal mountable RFID tag antenna in ultra high frequency range / Najwa Mohd Faudzi
title_short Development of metal mountable RFID tag antenna in ultra high frequency range / Najwa Mohd Faudzi
title_full Development of metal mountable RFID tag antenna in ultra high frequency range / Najwa Mohd Faudzi
title_fullStr Development of metal mountable RFID tag antenna in ultra high frequency range / Najwa Mohd Faudzi
title_full_unstemmed Development of metal mountable RFID tag antenna in ultra high frequency range / Najwa Mohd Faudzi
title_sort development of metal mountable rfid tag antenna in ultra high frequency range / najwa mohd faudzi
granting_institution Universiti Teknologi MARA
granting_department Faculty of Electrical Engineering
publishDate 2015
url https://ir.uitm.edu.my/id/eprint/18412/2/TM_NAJWA%20MOHD%20FAUDZI%20EE%2015_5.pdf
_version_ 1783733674969137152

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