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H. A. Majid
Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, Malaysia
Computer Science & IT Electrical & Electronics Engineering

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RF Energy Harvesting Study Using Various Metamaterial Patch Structure M. S. Zainudin; M. K. A. Rahim; N. A. Samsuri; H. A. Majid
International Journal of Electrical and Computer Engineering (IJECE) Vol 7, No 3: June 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (495.263 KB) | DOI: 10.11591/ijece.v7i3.pp1574-1579

Abstract

The E-field absorbance performance of various metamaterial absorber structure is presented. The study started from the simulation of various design patch of metamaterial absorber. The performances are measured from the reflection coefficient, percentage of absorption, value of E-field and the surface current for circle, square and hexagon patch design of metamaterial absorber. From the simulation, it is shown that the circle patch design shows the most reliable design for harvest energy with the absorption of 99.85% and highest E-field concentration of 2.07 × 105 V/m.
Embroidery Leaf Shape Dipole Antenna Performances and Characterisation N. J. Ramly; M. K. A. Rahim; N. A. Samsuri; H. A. Majid
International Journal of Electrical and Computer Engineering (IJECE) Vol 7, No 3: June 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.726 KB) | DOI: 10.11591/ijece.v7i3.pp1467-1472

Abstract

In this paper, leaf shape textile antenna in ISM band has been chosen to study. The operating frequency of the dipole antenna is 2.45GHz. The effect of conductive threads with three different types of sewing has been analysed. The first type of sewing leaf shape dipole antenna is to stitch around itself and embroidered into a fleece fabric with circular follow by vertical and horizontal stitch respectively. From measured return loss, the antenna with circular stitch shows better performances with optimum resonances compared with the two types of stitching. The measured results confirm that the circular stitch is more suitable for leaf shape dipole antenna design. Thus it can be concluded that different stitch gives different results for leaf shape dipole antenna.
Co-Authors M. K. A. Rahim M. K. A. Rahim M. S. Zainudin N. A. Samsuri N. A. Samsuri N. J. Ramly