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All Journal International Journal of Electrical and Computer Engineering Bulletin of Electrical Engineering and Informatics Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Indonesian Journal of Electrical Engineering and Computer Science
Farid Zubir
Universiti Teknologi Malaysia
Computer Science & IT Electrical & Electronics Engineering

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Journal : Bulletin of Electrical Engineering and Informatics

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A compact triband microstrip antenna utilizing hexagonal CSRR for wireless communication systems Murtala Aminu- Baba; Mohamad Kamal A. Rahim; Farid Zubir; Mohd Fairus Mohd Yusoff; Adamu Y Iliyasu; Mohammed Mustapha Gajibo; Huda A. Majid; K. I Jahun
Bulletin of Electrical Engineering and Informatics Vol 9, No 5: October 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (773.846 KB) | DOI: 10.11591/eei.v9i5.2191

Abstract

In this paper, a compact triband printed antenna with hexagonal complementary split-ring resonators (CSRRs) for 4G applications is proposed. The proposed multiband antenna is comprised of a rectangular patch antenna on the top plane, while on the ground plane, hexagonal CSRRs are etched for size miniaturization (at the lower bands) and multiband generation. Another effect of the CSRR is the shifting of the initial resonance of the patch antenna from 5.17 GHz to the higher band of 6.18 GHz. The triband of 180 MHz 2.4~2.59, 150 MHz 2.79~2.94 and 420 MHz 6.04~6.46 GHz bands acquired can cover WLAN/Wi-Fi and WiMAX operating bands adequately. This can be achieved by choosing the optimal size and position of the CSRR on the ground plane carefully. The design occupies a total size of 45 x 45 mm2 using the low-cost FR-4 substrate. Good agreements are obtained between the measured results and the simulated, which are discussed and presented.
Effects of bending on a flexible metamaterial absorber Siti Nurzulaiha Isa; Osman Ayop; Abu Sahmah Mohd Supa’at; Mohammad Kamal A. Rahim; Noor Asniza Murad; Farid Zubir; Huda A. Majid
Bulletin of Electrical Engineering and Informatics Vol 9, No 6: December 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v9i6.2204

Abstract

This paper presents a study of bending a metamaterial based absorber. The study of bending is important for textile material since it can be easily crumpled. The basic absorber that is simulated for the study is an annulled circle as the top patch, and metal ground plane that sandwich a textile-based substrate. The center frequency for the absorber is 10.525 GHz. The type of bending is divided into two parts, which is convex bending and concave bending. Through series of simulations, the effects of the bending on the absorptivity and the shifting of the resonant frequency is observed. Also, the study on the change of incident and polarization angle is also included to support the basis of flexible metamaterial absorber affected by the bending.  
Co-Authors Abu Sahmah Mohd Supa’at Adamu Y Iliyasu Amerrul Zabri Huda A. Majid Huda Bin A Majid Izni Husna Idris K. I Jahun Kamilia Kamardin Mohamad Kamal A. Rahim Mohamad Rijal Hamid Mohammad Kamal A Rahim Mohammad Kamal A. Rahim Mohammed Mustapha Gajibo Mohd Fairus Mohd Yusoff Muhammad Akram Mohd Sobri Muhammad Naeem Iqbal Murtala Aminu- Baba Noor Asniza Murad Norsaidah Muhamad Nadzir Osman Ayop Siti Nurzulaiha Isa Siti Nurzulaihan Isa Zaharah Johari