A DGS monopole antenna loaded with U‐shape stub for UWB MIMO applications

Hasan, M. N., Chu, S. and Bashir, S. (2019) A DGS monopole antenna loaded with U‐shape stub for UWB MIMO applications. Microwave and Optical Technology Letters, 61(9), pp. 2141-2149. (doi: 10.1002/mop.31877)

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A defected ground structure-based rectangular monopole antenna along with 2 × 2 and 4 × 4 multiple-input multiple-output (MIMO) antennas are presented. The proposed monopole antenna consists of a defected ground structure with two slits and a notch placed at optimum positions to increase the impedance bandwidth. Besides, the radiator is loaded with a U-shape stub to improve the impedance matching of the antenna. The measured impedance bandwidth of the proposed monopole antenna is from 3.18 to 11.5 GHz. Time domain experiment is carried on to investigate the dispersion characteristics of the proposed antenna. Measurement results reveal that the proposed antenna can retain the transmitted pulse shape, ensuring dispersion-free communication. Far-field measurements confirm omnidirectional radiation patterns over the operating bandwidth. Moreover, MIMO performance of the proposed 2 × 2 and 4 × 4 antenna arrays are evaluated based on isolation, envelop correlation coefficient, diversity gain, and channel capacity loss. The proposed single monopole and MIMO versions of this antenna can be used in portable UWB communication devices.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Cong Chu, Dr Son
Authors: Hasan, M. N., Chu, S., and Bashir, S.
College/School:College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
Journal Name:Microwave and Optical Technology Letters
ISSN (Online):1098-2760
Published Online:23 May 2019

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