What does this research mean for the field?

A four-element dual-band MIMO antenna array utilizing an antiparallel arrangement of unit element subarrays achieves high inter-port isolation (>25 dB) and peak realized gains of up to 12.4 dBi in the 28 GHz and 38 GHz 5G millimeter-wave bands. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To design and evaluate a compact four-element dual-band MIMO antenna array operating within the 5G millimeter-wave frequency spectrum.

August 30, 2026Scientific ReportsOpen Access

Dual-band four-element MIMO antenna array for 5G millimeter-wave communication

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Authors

PGPankaj Kumar GautamNational Institute of Technology Delhi AKAmit KumarIndian Institute of Technology Roorkee GSGunjan SrivastavaGraphic Era University

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Implication

Experimental design demonstrates high-gain dual-band isolation in a millimeter-wave array, indicating strong potential for compact 5G networks.

Key Points

To design and evaluate a compact four-element dual-band MIMO antenna array operating within the 5G millimeter-wave frequency spectrum.
Configured four 1 × 4 unit element subarrays in an antiparallel arrangement to reduce mutual coupling and enhance isolation.
Integrated four symmetrically arranged modified rectangular patches with T-junction power dividers to achieve equal power division, phase coherence, and stable excitation across a 40 mm × 96 mm × 0.254 mm volume.
Achieved dual-band operation across 28.3–29.1 GHz (fractional bandwidth ≈ 2.8%) and 38.31–39.13 GHz (fractional bandwidth ≈ 2.1%).
Demonstrated inter-port isolation exceeding 25 dB in the lower frequency band and 30 dB in the upper frequency band.
Reached peak realized gains of 9.1 dBi at 28.7 GHz and 12.4 dBi at 38.72 GHz.

Cite This Study

Gautam et al. (2026) studied this question.

synapsesocial.com/papers/6a93f0b06c1a8fb52e79d02a https://doi.org/10.1038/s41598-026-68526-2

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Implication

Experimental design demonstrates high-gain dual-band isolation in a millimeter-wave array, indicating strong potential for compact 5G networks.

Dual-band four-element MIMO antenna array for 5G millimeter-wave communication

Discussion

Member takes

Implication

Key Points

Cite This Study

Dual-band four-element MIMO antenna array for 5G millimeter-wave communication

Discussion

Member takes

Implication

Key Points

Cite This Study

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