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Two-Port Metasurface-Loaded Circularly Polarized Al2O3 Ceramic-Based Filtering Antenna for 2.5/2.6 GHz Band

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Abstract

In this paper, a two-port alumina-based filtering antenna is designed and investigated. The feeding structure of the proposed antenna creates dual radiation nulls inside the cylindrical ceramic, which in turn produces the filtering characteristics. A metasurface is suspended over the two-port radiator to convert linear waves into circular waves. The designed metasurface also reduces the mutual coupling between two ports by an amount of −15 dB because it acts as a single negative material. Experimental results are in good agreement with simulated outcomes. It works efficiently between 2.31 GHz and 2.62 GHz with an isolation level of more than 35 dB. 3 dB axial ratio is obtained between 2.4 GHz and 2.61 GHz. Out of the frequency band, the gain value is less than −15 dB, while it is 4.28 dBi in the functioning frequency range. Stable radiation properties make it suitable for B41/n41 (2.5/2.6 GHz) applications.a standard retrieval procedure.

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Funding

Author Anand Sharma wishes to acknowledge the Council of Science and Technology, U.P., for the financial support to conduct this work successfully (notification No. CST/D-2396 dated 24/03/2021).

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, India

    Abhimanyu Yadav, Manish Tiwari & Anand Sharma

  2. Department of Electronics & Communication Engineering, Nagarjuna College of Engineering and Technology, Bengaluru, Karnataka, India

    Nagesh Kallollu Narayanaswamy

Authors
  1. Abhimanyu Yadav
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  2. Nagesh Kallollu Narayanaswamy
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  3. Manish Tiwari
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  4. Anand Sharma
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Contributions

Conceptualization and methodology [AY and NKN]; writing—revised draft preparation: [MT]; analysis and investigation: [AY and AS]; writing—original draft preparation and supervision: [AS]

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Correspondence to Anand Sharma.

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Yadav, A., Narayanaswamy, N.K., Tiwari, M. et al. Two-Port Metasurface-Loaded Circularly Polarized Al2O3 Ceramic-Based Filtering Antenna for 2.5/2.6 GHz Band. J. Electron. Mater. 52, 8141–8150 (2023). https://doi.org/10.1007/s11664-023-10734-x

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