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Volume 13 | Issue 5 | Year 2026 | Article Id. IJEEE-V13I5P108 | DOI : https://doi.org/10.14445/23488379/IJEEE-V13I5P108

Dual-Band SIW-Based 2-Port and 4-Port MIMO Antenna for Next-Generation 5G Systems

H Vinod Kumar, A R Aswatha, Vinod B Durdi

Received Revised Accepted
14 Feb 2026 13 Apr 2026 30 May 2026

Citation :

H Vinod Kumar, A R Aswatha, Vinod B Durdi, "Dual-Band SIW-Based 2-Port and 4-Port MIMO Antenna for Next-Generation 5G Systems," International Journal of Electrical and Electronics Engineering, vol. 13, no. 5, pp. 95-104, 2026. Crossref, https://doi.org/10.14445/23488379/IJEEE-V13I5P108

Abstract

In this manuscript, the proposed work mainly focuses on the antenna and performance assessment of a dual-band Substrate Integrated Waveguide (SIW) Multiple-Input Multiple-Output (MIMO) antenna developed for wireless 5G systems. The new 5G communication keeps the restrictions of data speed, coverage, reliability, and capacity. Thus, antenna systems operating in the millimeter range must deliver strong performance while remaining compact and efficient. To achieve these demands, both 2-port and 4-port dual-band MIMO antenna with the SIW technique helps to improve isolation and high-power handling capacity; these configurations are proposed and analyzed. The designed antennas consist of Rogers RT/Duroid 5880 substrate and use inset-fed microstrip patch elements to operate around frequency of 28 GHz and 39 GHz. The 2-port MIMO antenna attains a gain of 7.53 dB and 5.98 dB, with impedance bandwidths of 1.53 GHz and 2.67 GHz at resonant frequencies of 28.81 GHz and 39.33 GHz. The 4-port antenna configuration performance improves further, delivering gains of 8.46 dB and 6.18 dB and bandwidths of 1.51 GHz and 2.54 GHz at 28.80 GHz and 39.46 GHz. Both MIMO antenna designs show outstanding impedance matching, with reflection coefficients below -10 dB, radiation efficiency exceeds 93%, and Voltage Standing Wave Ratio (VSWR) values within acceptable limits (VSWR ≤ 2) across the operating bands. Overall, the simulation results predict that the proposed MIMO antennas perform better and are the most suitable for high-performance next-generation 5G Technologies.

Keywords

Patch Antenna, MIMO, Dual-band, HFSS Tool, 5G Application

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