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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 Computer Science
Mohamad Kamal A. Rahim
Universiti Teknologi Malaysia
Computer Science & IT Electrical & Electronics Engineering

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Journal : Bulletin of Electrical Engineering and Informatics

 1 
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.
High gain antenna at 915 MHz for off grid wireless networks Hussam Hamid Keriee; Mohamad Kamal A. Rahim; Nawres Abbas Nayyef; Zahriladha Zakaria; Ahmed Jamal Abdullah Al- Gburi; Fahad Taha Al-Dhief; Mustafa M. Jawad
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.v9i6.2192

Abstract

This paper presents a high gain antenna for off-grid wireless networks at 915 MHz. The requirements for compact size and high gain antenna are needed in the industrial, scientific and medical (ISM) band for better performance and coverage. Hence, microstrip planar substrate is proposed to overcome the size challenges. The proposed antenna is designed based on rectangular patch with air gap technique. The proposed antenna is optimized using computer simulation technology software (CST) and fabricated on low profile FR-4 substrate. The measured performance agreed well with the simulated one. The reflection of less than -10 dB is obtained with high gain of 6.928 dB at desired frequency. Overall, this antenna can be a good candidate for the off-grid wireless network applications. 
Substrate integrate waveguide and microstrip antennas at 28 GHz Yaqdhan Mahmood Hussein; Mohamad Kamal A. Rahim; Noor Asniza Murad; Mustafa Mohammed Jawad; Hatem O. Hanoosh; Huda A. Majid; Hussam H. A. Keriee
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.v9i6.2190

Abstract

In this paper, two antennas are designed using substrate integrated waveguide (SIW) and microstrip technology at 28 GHz. Parametric study for both antennas is presented to demonstrate the performance at millimeter wave frequency for wireless communication network (5G application). Roger RT5880 substrates with permittivity 2.2 and loss tangent 0.0009 are used to implement the antennas with two thicknesses of 0.508 mm and 0.127 mm respectively. Both antennas have the same size of substrate 12x12 mm with a full ground plane was used. Structures designs have been done by using computer simulation technology (CST). The simulation results showed that the antenna with SIW and roger RT 5880 substrate thickness 0.508 has better performance in term of return loss and radiation pattern than the microstrip patch antenna at 28 GHz. A return loss more than -10 dB and the gain are 6.4 dB obtained with wide bandwidth range of (27.4-28.7) GHz. This proving to increase the realized gain by implementing SIW at millimeter wave band for 5G application network.  
Co-Authors Adamu Y Iliyasu Ahmed Jamal Abdullah Al- Gburi Amerrul Zabri Boodhoo Kirish Fahad Taha Al-Dhief Farid Zubir Farid Zubir Hatem O. Hanoosh Huda A. Majid Hussam H. A. Keriee Hussam Hamid Keriee Izni Husna Idris K. I Jahun Kamilia Kamardin Mohamad Rijal Hamid Mohamad Zoinol Abidin A. Aziz Mohamed Nasrun Osman Mohammed Mustapha Gajibo Mohd Ezwan B. Jalil Mohd Ezwan Bin Jalil Mohd Fairus Mohd Yusoff Muhammad Azfar Abdullah Murtala Aminu- Baba Mustafa M. Jawad Mustafa Mohammed Jawad Muzammil Jusoh Nawres Abbas Nayyef Noor Asmawati Samsuri Noor Asniza Murad Norsaidah Muhamad Nadzir Nursaidah Muhamad Nadzir Osman B. Ayop Shaharil Mohd Shah Sunti Tuntrakool Yaqdhan Mahmood Hussein Zahriladha Zakaria