Wheel-shaped miniature assembly of circularly polarized wideband microstrip antenna for 5G mmWave terminals

Kamal, Shahanawaz and Bin Ain, Mohd Fadzil and Ullah, Ubaid and Mohammed, Abdullahi S. B. and Najmi, Fathul and Hussin, Roslina and Ahmad, Zainal Arifin and Omar, Mohamad Faiz Bin Mohamed and Ab Rahman, Mohd Fariz and Mahmud, Mohd Nazri and Othman, Mohamadariff (2021) Wheel-shaped miniature assembly of circularly polarized wideband microstrip antenna for 5G mmWave terminals. Alexandria Engineering Journal, 60 (2). pp. 2457-2470. ISSN 1110-0168, DOI https://doi.org/10.1016/j.aej.2020.12.054.

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A simple arrangement of wheel-shaped copper microstrip antenna is presented for operation in the 24 GHz frequency band. In this structure, a coaxial feed probe was utilized to generate vertical polarization, and a wheel-shaped microstrip with four coupling arms was used to produce horizontal polarization. An antenna comprising of two copper sheets assembled between the air substrate was manufactured and characterized experimentally. The measured and simulated values are in close compliance with each other. A stable in-band omnidirectional radiation patterns were achieved thereby ensuring a proper combination of the field vectors from the feed probe and the radiating arms. The antenna occupied an overall footprint of 8 mm to fruitfully realize -10 dB impedance bandwidth 3 GHz and radiation efficiency of similar to 100%. In the operating frequency band from 22.5 to 25.7 GHz, axial ratio <2.7 dB, gain <6 dBic and specific absorption rate (SAR) <0.06 W/kg was maintained. Furthermore, the integration of simple geometry and air-substrate significantly reduced the fabrication cost of the antenna system. Hence, the antenna is a promising candidate for 5G millimeter (mmWave) wireless communications. (C) 2021 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University.

Item Type: Article
Funders: Ministry of Higher Education, Malaysia under Fundamental Research Grant Scheme[203. PELECT.6071429]
Uncontrolled Keywords: 24 GHz band;5G wireless technology;Antenna;Circular polarization;mmWave communications;Wideband
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 13 Sep 2022 08:03
Last Modified: 13 Sep 2022 08:03
URI: http://eprints.um.edu.my/id/eprint/34434

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