Self-decoupled quad-port CPW-fed fractal MIMO antenna with UWB characteristics

Binghao, Wang and Kamarudin, Muhammad Ramlee and Muhammad Kamal, Mian and Shoaib, Nosherwan and Rafque, Umair and Abbasi, Muhammad Inam (2024) Self-decoupled quad-port CPW-fed fractal MIMO antenna with UWB characteristics. International Journal of Antennas and Propagation, 2024 (382689). pp. 1-14. ISSN 1687-5869

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Abstract

In this work, a novel fractal multiple-input multiple-output (MIMO) antenna is designed for ultrawideband (UWB) applications. The radiating structure of the MIMO confguration employs a circular fractalradiating structure excited through a modifed coplanar wave guide (CPW) feed. Te fractal shape is designed by employing small circular rings inside the main circular ring patch element, whichled to enhanced impedance bandwidth spanning from 3.15 to 20 GHz with acceptable radiation properties. Te results show that the designed antenna has a peak gain of 6.13 dBi and radiation efciency of > 85% in the operating bandwidth. Moreover, the single-antenna element exhibits stable radiation patterns in the UWB frequency spectrum. For MIMO communication systems, a polarization diversity-based quad-port MIMO antenna is designed. From the designed MIMO antenna confguration, an isolation of > 15 dB is achieved among the radiating elements without the use of any isolation enhancement network. Furthermore, MIMO performance parameters such as envelope correlation coefcient (ECC) of < 0.008, mean efective gain (MEG) of < − 3 dB, channel capacity loss (CCL) of < 0.25 bps/Hz,and total active refection coefcient (TARC) of > 20 dB are obtained from the proposed UWB MIMO antenna.

Item Type:	Article
Uncontrolled Keywords:	Fractal antenna, MIMO, Polarization diversity, UWB
Divisions:	Faculty of Electrical and Electronic Engineering Technology
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	11 Aug 2025 05:03
Last Modified:	11 Aug 2025 05:03
URI:	http://eprints.utem.edu.my/id/eprint/28912
Statistic Details:	View Download Statistic

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