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Dual-Band Antenna Array with Reduced Mutual-Coupling for Wearable Wireless Communication Applications

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Abstract

In this paper, dual-band wearable microstrip patch antenna printed on FR4-substrate is designed and fabricated for wearable wireless communications. A star-shaped monopole Ω antenna connected to 50 Ω transmission line, backed by partial ground plane is used. The antenna dimensions are optimized for wideband radiation characteristics. Different types of dielectric substrates are investigated for wideband wearable applications. The proposed antenna printed on jeans textile substrate introduces an impedance matching bandwidth of 7.3 GHz with maximum gain of 5 dBi. The effect of mutual coupling between two parallel patches, two opposite patches and two orthogonal patches on their radiation characteristics are investigated. High isolation is achieved for two orthogonal patches placed away from each other by 0.3λ with a rectangular strip etched between them and cutting in the ground plane. The isolation is below − 29 dB within the frequency band. The structure achieves impedance matching bandwidth of 1.8 GHz in 1st-band and 4.8 GHz in 2nd-band with maximum gains of 8.5 dBi and 5.3 dBi, respectively. A prototype element is fabricated, measured and the radiation characteristics coincide with the simulated results. The structure is simple, light-weight, and is suitable for WAN applications in the frequency band from 2 GHz to 7 GHz. The effect of human body tissue on the radiation characteristics of the antenna array is investigated. 

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Acknowledgements

This study was supported by the Electronic research institute.

Funding

There is No funds, grants, or other support was received to conduct this study.

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Authors and Affiliations

  1. Faculty of Eng., Egyptian Russian University, Badr, Egypt

    Shaymaa M. Gaber

  2. Faculty of Eng., Kafer El-Shiekh University, Kafer El-Shiekh, Egypt

    Noha A. El-Shalaby

  3. Faculty of Electronic Engineering, Menoufia University, Menouf, Egypt

    Hend A. Malhat

Authors
  1. Shaymaa M. Gaber
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  2. Noha A. El-Shalaby
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  3. Hend A. Malhat
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All the authors contribute equally in this paper.

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Correspondence to Noha A. El-Shalaby.

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Gaber, S.M., El-Shalaby, N.A. & Malhat, H.A. Dual-Band Antenna Array with Reduced Mutual-Coupling for Wearable Wireless Communication Applications. Wireless Pers Commun 122, 3777–3794 (2022). https://doi.org/10.1007/s11277-021-09111-w

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  • DOI: https://doi.org/10.1007/s11277-021-09111-w

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