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All Journal International Journal of Electrical and Computer Engineering Indonesian Journal of Electrical Engineering and Computer Science
Mohd Tarmizi Ali
Universiti Teknologi Mara
Computer Science & IT Electrical & Electronics Engineering

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Metal Mountable Ladder Feed Line UHF-RFID Tag Antenna Najwa Mohd Faudzi; Mohd Tarmizi Ali; Ismarani Ismail; Hadi Jumaat; Nur Hidayah Mohd Sukaimi
International Journal of Electrical and Computer Engineering (IJECE) Vol 5, No 4: August 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1113.088 KB) | DOI: 10.11591/ijece.v5i4.pp750-758

Abstract

A microstrip dipole UHF-RFID tag antenna that can be mounted on metal object is presented in this paper. The antenna, which has a very simple structure without any shorting pin and shorting plate, is composed of ladder feed line, rectangular loop, capacitive tip-loading and T-match structure. The insertion of ground plane in the tag antenna design reduces the negative impact of metal object to the performance of the tag antenna. The tag is designed to operate in the Malaysia frequency range with the center frequency of 921 MHz. The performance of the tag is evaluated through simulation and measurement in terms of impedance matching, antenna reflection coefficient and tag reading range. The measured reading range obtained when the tag is in free air and on metal object is 2.3 m and 2.2 m respectively.
A rectangular CSRR based microstrip UHF reader patch antenna for RFID applications Syamimi Mohd Norzeli; Ismarani Ismail; Norashidah Md Din; Mohd Tarmizi Ali; Ali Abd Almisreb; Ammar Ahmed Alkahtani
Indonesian Journal of Electrical Engineering and Computer Science Vol 17, No 3: March 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v17.i3.pp1434-1441

Abstract

This paper presents a compact microstrip ultra-high frequency (UHF) reader patch antenna with complementary split ring resonator (CSRR) for radio frequency identification (RFID). The total size of the antenna is 208 × 208 × 1.6 mm3. The proposed antenna is designed, fabricated and measured in order to verify the proposed concept. The characterization for radiation parameters, like return loss, radiation pattern and antenna gain have been done experimentally. The proposed antenna is operated at 921 MHz for and achieved a gain of 8.285 dBi. All simulations in this work have been carried out by means of the commercial computer simulation technology (CST) software. In compare to the simulated results, the measured outcomes are promised.
Co-Authors Ali Abd Almisreb Ammar Ahmed Alkahtani Hadi Jumaat Ismarani Ismail Najwa Mohd Faudzi Norashidah Md Din Nur Hidayah Mohd Sukaimi Syamimi Mohd Norzeli