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Dual-band circularly polarized textile antenna with split-ring slot for off-body 4G LTE and WLAN applications

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Abstract

The design of a dual-band circularly polarized wearable textile antenna is presented. The antenna consists of a slotted split-ring textile patch with a full ground plane. It features a 46 × 46 mm2 square patch over 70 × 70 mm2 ground plane using a 3-mm felt substrate. The proposed square radiator is modified using slotted split-ring to cater for dual-band resonance. The antenna is capable of providing dual-band coverage for the entire 1.8 and 2.6 GHz for the Fourth-Generation (4G) Long-Term Evolution (LTE), and for the 2.45-GHz Wireless Local Area Network (WLAN) applications. The antenna featured an impedance bandwidth of 70 MHz (1.76–1.83 GHz) in the 4G LTE (Band 3) and 400 MHz (2.36–2.76 GHz) in the Industrial, Medical and Scientific (ISM) band. The measured 3-dB axial-ratio bandwidths are 2.8% (in the lower band) and 4.2% (in the upper band) with a maximum realized gain of 3.2 dB at 2.45 GHz. Simulations and measurements indicated a good agreement with suitability to be applied in the 4G and WLAN bands.

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Acknowledgements

This project is financially supported by the Ministry of Higher Education, Malaysia and Short-Term Grant University of Wollongong in Dubai (UOWD), Dubai, UAE. The authors acknowledge the technical contributions of Mr. Herwansyah Lago and Mr. Khuzairi Masrakin.

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Authors and Affiliations

  1. Bioelectromagnetics Research Group (BioEM), School of Computer and Communication Engineering, Universiti Malaysia Perlis (UniMAP), 02000, Arau, Perlis, Malaysia

    Eissa A. Mohammad & Hasliza A. Rahim

  2. Advanced Communication Engineering (ACE) CoE, School of Computer and Communication Engineering, Universiti Malaysia Perlis (UniMAP), 02000, Arau, Perlis, Malaysia

    Ping Jack Soh & Mohd Faizal Jamlos

  3. Faculty of Engineering and Information Sciences, University of Wollongong in Dubai (UOWD), Dubai, United Arab Emirates

    Mohamedfareq Abdulmalek

  4. Bioelectromagnetics Research Group (BioEM), Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), Arau, Perlis, Malaysia

    Yeng Seng Lee

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  1. Eissa A. Mohammad
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  2. Hasliza A. Rahim
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  3. Ping Jack Soh
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  4. Mohd Faizal Jamlos
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  5. Mohamedfareq Abdulmalek
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  6. Yeng Seng Lee
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Correspondence to Hasliza A. Rahim.

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Mohammad, E.A., Rahim, H.A., Soh, P.J. et al. Dual-band circularly polarized textile antenna with split-ring slot for off-body 4G LTE and WLAN applications. Appl. Phys. A 124, 568 (2018). https://doi.org/10.1007/s00339-018-1991-9

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  • DOI: https://doi.org/10.1007/s00339-018-1991-9

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