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MIMO/Diversity Antenna with Neutralization Line for WLAN Applications

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Abstract

A four-port multi-input-multi-output (MIMO) antenna is designed for the WLAN access point applications. The prospective antenna consists of four double-layered printed dipole antennas (DLPDAs), where two elements are designed to resonate at a frequency of 2.45 GHz and the resonant frequency of the other two elements is 5.8 GHz. The resonant bandwidths of the DLPDAs are 24.7% (2.09–2.68 GHz) and 28.9% (4.73–6.33 GHz) at 2.45 GHz and 5.8 GHz, respectively. The proposed MIMO antenna is printed on the FR-4 substrate of size 45 mm × 60 mm × 1.6 mm. A decoupling network is introduced in the center of the proposed antenna to achieve high isolation between resonating elements. The decoupling arrangement is a combination of four metal strips and a circular loop that acts as a neutralization line. It opposes the direct coupling current and provides isolation of around 20.55 dB at 2.45 GHz and 33.08 dB at 5.8 GHz.

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Authors and Affiliations

  1. Department of Electronic Science, University of Delhi South Campus, New Delhi, 110022, India

    Amit Birwal

  2. Institute of Informatics and Communication, University of Delhi South Campus, New Delhi, 110022, India

    Sanjeev Singh

  3. School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, 110067, India

    Binod Kumar Kanaujia

  4. School of Electronics Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea

    Sachin Kumar

Authors
  1. Amit Birwal
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  2. Sanjeev Singh
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  3. Binod Kumar Kanaujia
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  4. Sachin Kumar
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Correspondence to Sachin Kumar.

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Birwal, A., Singh, S., Kanaujia, B.K. et al. MIMO/Diversity Antenna with Neutralization Line for WLAN Applications. MAPAN 36, 763–772 (2021). https://doi.org/10.1007/s12647-020-00427-9

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  • DOI: https://doi.org/10.1007/s12647-020-00427-9

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