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All Journal International Journal of Reconfigurable and Embedded Systems (IJRES) Indonesian Journal of Electrical Engineering and Computer Science
Raed Hameed Chyad Alfilh
The Islamic University
Economics, Econometrics & Finance

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Design and analysis of wide and multi-bands multi-input multi-output antenna for 5G communications Karrar Shakir Muttair; Ali Zuhair Ghazi Zahid; Oras Ahmed Shareef; Raed Hameed Chyad Alfilh; Ahmed Mohammed Qasim Kamil; Mahmood Farhan Mosleh
Indonesian Journal of Electrical Engineering and Computer Science Vol 26, No 2: May 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v26.i2.pp903-914

Abstract

A good antenna design has played an essential role in the design of wireless communication systems, international companies are looking for the best design that suits their products in terms of size, bandwidth, gain, cost, and performance. In this paper, three antenna models are designed for fifth-generation (5G) communications, the first model is a single antenna, the second model is a two-ports multi-input multi-output (MIMO) antenna, and the third model is a four-ports MIMO antenna. The geometric dimensions of a single antenna are 20×37×1.6 mm3, the two-ports antenna dimensions are 44×37×1.6 mm3, while the four-ports antenna dimensions are 74×44×1.6 mm3. The design of these antennas was based on the latest strategies in terms of their small sizes and operating from 13.5 to 20 GHz in wide and multiple bands to be compatible with all advanced communication devices. Based on the results that emerged, it was noted that the reflection coefficient (S11) < -10 dB and has better isolation between the ports is < -26 dB. While the envelope correlation coefficient (ECC) value is < 1.036×10-9, and the diversity gain (DG) value is 10 dB. All antennas proposed operate in ultra-wideband (UWB) which is very necessary for 5G communications devices.
Fire prediction monitoring system based on a spatial interpolation algorithm Karrar Shakir Muttair; Ali Zuhair Ghazi Zahid; Rana Jawad Azeez; Oras Ahmed Shareef Al-Ani; Ahmed Mahmood Farhan; Raed Hameed Chyad Alfilh; Raed Hasan Hussain; Muthana H. Al-Saidi; Abbas Ali Diwan; Zeshan Ahmed; Hazeem Baqir Taher
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 15, No 2: July 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijres.v15.i2.pp490-503

Abstract

Fires endanger not only the environment's wealth but also the entire fauna and flora, drastically disrupting a region's biodiversity and ecology. This article monitors the spread of a fire in a specific area, determines its approximate direction, attempts to extinguish it in an organized manner, and identifies the safest solutions. A new system has been developed, consisting of two parts: embedded and reconfigurable. This system comprises four accurate flame sensors, a buzzer, an Arduino, and a field-programmable gate array (FPGA) DEV board. The Arduino and FPGA collect data from these sensors and send it to MATLAB, which processes and displays the results. This paper also uses a two-stage prediction based on a spatial interpolation algorithm. The results showed that the speed and direction of fire spread could be predicted quickly and accurately using a spatial interpolation algorithm, achieving the lowest predictive error (mean absolute error (MAE) ≈0.33 and root mean square error (RMSE) ≈0.48) at approximately epoch 70. Moreover, the proposed method achieved a 92% success rate in detecting flames and fire flashes, indicating that the sensors respond to fires within under 1 minute of occurrence.
Co-Authors Abbas Ali Diwan Ahmed Mahmood Farhan Ahmed Mohammed Qasim Kamil Ali Zuhair Ghazi Zahid Ali Zuhair Ghazi Zahid Hazeem Baqir Taher Karrar Shakir Muttair Karrar Shakir Muttair Mahmood Farhan Mosleh Muthana H. Al-Saidi Oras Ahmed Shareef Oras Ahmed Shareef Al-Ani Raed Hasan Hussain Rana Jawad Azeez Zeshan Ahmed