Modified Monopole 8 Element MIMO Antenna Array for Mobile Applications

Abstract

These days, wireless applications are very necessary, and most of these applications use microwave frequencies, primarily ISM bands (Industrial, Science, Medical), as well as 5G- SUB6 bands. This task offers an antenna with multiple entrances and multiple output antennas (MIMO) over the weekend to work in wireless applications. In this article, MIMO is a 8 quarter Band antenna for wireless services. It operates at the level of 2.2 GHz - 2.65 GHz, 5 GHz - 5.7 GHz, 7.2 GHz- 9 GHz and 12 GHz -14 GHz. The antenna is printed by a FR4 subtract with a thickness of 0.4mm with a relative dielectric permeability of 4.4 and a loss of 0.02 and is intended for the perpendicular edge of the system board. Applicationto popular mobile phones in fullscreen. Simulation result show that the reflection coefficient is less than -6db, with better separation than 20dB at radiation band frequencies. Meet future 5G applications and other wireless Communication needs.

Introduction

The document discusses the design and modeling of a microstrip patch MIMO antenna operating in the sub-6 GHz frequency range for 5G applications, using the HFSS electromagnetic simulation tool. It highlights the importance of smaller antenna sizes and wider bandwidths in modern communication systems, particularly covering frequency bands from 2.2 GHz to 14 GHz, including ISM, 5G Sub-6, C, and X bands.

Key antenna parameters such as return loss, bandwidth, gain, radiation pattern, and substrate materials are explained. The design methodology involves calculating antenna dimensions using established formulas, simulating with HFSS, and optimizing parameters to improve performance, especially return loss (S11) and isolation (Sij).

The study presents an 8x8 MIMO antenna design with good isolation (Sij below -25 dB) and multi-band radiation capability, suitable for cellular and mobile communication systems. The results demonstrate effective radiation across multiple bands, good signal return, and minimal interference, making the design well-suited for 5G and other wireless communication applications.

Conclusion

In this work a microstrip MIMO antenna is designed, simulated and simulated recorded. In this work, the antenna is successfully radiating in four radiating bands which includes the Sub6 band of the 5G communication, ISM band, C band and X band. The proposed antenna has FR4 subtract. The final design has dimensions of 85 x 73.6mm2, of ring shaped structure. It is suitable for the smartphone applications. It radiates in 2.2 to 2.65 GHz, 5 to 5.7 GHz, 7.2 to 9 GHz and 12 to 14 GHz successfully. The radiating band covers the s- band, c- band, and X – band applications. It also includes ISM bands. The S – band consists of the mobile, blue – tooth, Wi-Fi applications. The C- band is a commercial band, that consist satellite applications and military applications

References

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Copyright

Copyright © 2025 K. Rojamani, A. Manju Priya, S. Gomukhi, A. Davis Johnson, K. Varsha. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.