A Novel and Compact Metamaterial‐Based Four‐Element MIMO Antenna System for Millimeter‐Wave Wireless Applications with Enhanced Isolation

A compact fork‐shaped MIMO antenna system with a 2 × 2 arrangement with four elements is presented. The MIMO elements are arranged orthogonally to achieve a small overall size of 36 × 28 mm 2 and a wide bandwidth for 5G mm‐wave applications. MIMO elements are positioned 4 mm from each corner of the...

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Bibliographic Details
Published in:International journal of antennas and propagation 2024-07, Vol.2024 (1)
Main Authors: Din, Iftikhar Ud, Abbasi, Nisar Ahmad, Ullah, Waheed, Ullah, Sadiq, Ouameur, Messaoud Ahmad, Jayakody, Dushantha Nalin K.
Format: Article
Language:English
Subjects:
5G mobile communication
Antennas
Bandwidths
Correlation coefficients
Design
Design standards
Efficiency
Energy consumption
Extremely high frequencies
Frequencies
Frequency ranges
Frequency spectrum
Metamaterials
Millimeter waves
MIMO communication
Radiation
Spectrum allocation
Substrates
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Summary:A compact fork‐shaped MIMO antenna system with a 2 × 2 arrangement with four elements is presented. The MIMO elements are arranged orthogonally to achieve a small overall size of 36 × 28 mm 2 and a wide bandwidth for 5G mm‐wave applications. MIMO elements are positioned 4 mm from each corner of the substrate to achieve compact size and minimize coupling. To improve the isolation of the proposed MIMO system, a metamaterial slab is inserted in the middle of the substrate and between radiating elements of the MIMO antenna system, which improves isolation by 10 dB within the whole operating band and achieves maximum isolation of 65 dB at 34.5 GHz. The proposed MIMO system operates in the Ka‐band frequency range of 22–50 GHz with isolation greater than 30 dB and efficiency above 80% across the entire frequency spectrum for 5G communication. Additionally, the performance parameters of MIMO are examined, including diversity gain (DG) and envelope correlation coefficient (ECC), and it is found that they meet the required standards of DG approximately equal to 10 and ECC < 0.05. The proposed MIMO system has been fabricated and tested. The measured results are consistent with the design of the simulated structure using the CST Microwave Studio (CSTMWS) simulator.
ISSN:1687-5869
1687-5877
DOI:10.1155/2024/7480655