Frequency-selective surface-based MIMO antenna array for 5G millimeter-wave applications

Din, Iftikhar Ud, Alibakhshikenari, Mohammad, Virdee, Bal Singh, Jayanthi, Renu Karthick Rajaguru, Ullah, Sadiq, Khan, Salahuddin, See, Chan Hwang, Golunski, Lukasz and Koziel, Slawomir (2023) Frequency-selective surface-based MIMO antenna array for 5G millimeter-wave applications. Sensors, 23 (15). pp. 1-17. ISSN 1424-8220

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Abstract / Description

In this paper, a radiating element consisting of a modified circular patch is proposed for MIMO arrays for 5G millimeter-wave applications. The radiating elements in the proposed 2 x 2 MIMO antenna array are orthogonally configured relative to each other to mitigate mutual oupling that would otherwise degrade the performance of the MIMO system. The MIMO array was fabricated on Rogers RT/Duroid high-frequency substrate with a dielectric constant of 2.2, a thickness of 0.8 mm, and a loss tangent of 0.0009. The individual antenna in the array has a measured impedance bandwidth of 1.6 GHz from 27.25 to 28.85 GHz for S11 less than or equal to -10 dB, and the MIMO array has a gain of 7.2 dBi at 28 GHz with inter radiator isolation greater than 26 dB. The gain of the MIMO array was increased by introducing frequency-selective surface (FSS) consisting of 7 x 7 array of unit cells comprising rectangular C-shaped resonators, with one embedded inside the other with a central crisscross slotted patch. With the FSS, the gain of the MIMO array increased to 8.6 dBi at 28 GHz. The radiation from the array is directional and perpendicular to the plain of the MIMO array. Owing to the low coupling between the radiating elements in the MIMO array, its Envelope Correlation Coefficient (ECC) is less than 0.002, and its diversity gain (DG) is better than 9.99 dB in the 5G operating band centered at 28 GHz between 26.5 GHz and 29.5 GHz.

Item Type: Article
Uncontrolled Keywords: MIMO antenna; millimeter-wave (mm wave) region; wide bandwidth; mutual coupling reduction; frequency-selective surface; fifth generation (5G)
Subjects: 600 Technology
600 Technology > 620 Engineering & allied operations
Department: School of Computing and Digital Media
Depositing User: Bal Virdee
Date Deposited: 08 Aug 2023 08:35
Last Modified: 08 Aug 2023 08:35


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