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4 Element compact triple band MIMO antenna for sub-6 GHz 5G wireless applications

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Abstract

A compact 4 element MIMO antenna operating in three Sub-6 GHz 5G bands is proposed. The single element antenna consists of a square-shaped patch where circular and rectangular-shaped slot cuts are incorporated. The single element is symmetrically arranged along the horizontal direction and in mirrored fashion along the vertical and diagonal direction. The 4 element MIMO antenna achieves a symmetric structure on top with the connected ground at back. With no extra isolation element, the proposed FR-4 based design achieves compact size of 0.39λ02 (f0 = 3.72 GHz) operating in three frequency bands ranging from (2.65%) 3.72–3.82 GHz, (2.33%) 4.65–4.76 GHz and (4.75%) 6.16–6.46 GHz. The satisfactory isolation amongst inter-elements (≥ 16 dB) with directional radiation pattern and an average gain of 2.5 dBi is attained for proposed bands. Furthermore, the antenna meets the MIMO diversity criteria by achieving DG > 9.7, ECC < 0.1, TARC < -10 dB, the ratio of MEG ≈ 1, and lastly channel capacity loss < 0.5 bits/s/Hz making it commercially viable for its use in wireless 5G devices using Sub-6 GHz bands.

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Acknowledgements

The authors would like to thank Charotar University of Science and Technology (CHARUSAT), Changa, Gujarat, India for providing technical as well as financial support to complete the work successfully.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Prathyusha Engineering College, Chennai, Tamil Nadu, India

    R. Krishnamoorthy

  2. Department of Electronics and Communication Engineering, CSPIT, Charotar University of Science and Technology (CHARUSAT), Changa, 388421, India

    Arpan Desai & Riki Patel

  3. Computer and Electrical Engineering and Computer Science, Florida Atlantic University, Boca Raton, Florida, USA

    Riki Patel

  4. Department of Electronics and Communication Engineering, Shaheed Bhagat Singh State University, Ferozepur, Punjab, India

    Amit Grover

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  1. R. Krishnamoorthy
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  2. Arpan Desai
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Correspondence to Arpan Desai.

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Krishnamoorthy, R., Desai, A., Patel, R. et al. 4 Element compact triple band MIMO antenna for sub-6 GHz 5G wireless applications. Wireless Netw 27, 3747–3759 (2021). https://doi.org/10.1007/s11276-021-02734-8

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