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Integration of coupling resonator as port-isolator and MMLC-Minkowiski fractal loop for Wi-Max rejection in 4-port compact UWB MIMO antenna

Author

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  • Asutosh Mohanty
  • Sudhakar Sahu

Abstract

This paper presents a 4-port compact UWB MIMO antenna. It has 45 $ ^{0} $ 0 tilted offset feed for better impedance matching and connected to cornered cut-out quad-radiators. Radially symmetric resonators are provided for impedance matching and isolation improvements. A miniaturized magnetic LC (MMLC) Minkowiski fractal loop acts as a magnetic shield between electric walls of feed and resonator for Wi-max band rejection. The contra-rotational symmetry of resonator and rotationally asymmetric strips in ground enhances isolation. To validate, a prototype antenna is fabricated and measured which shows good agreements. The proposed antenna has a compact dimension 31 mm × 31 mm, operates from 2.27 to 11.7 GHz and reject bands at 3.0–4.2 GHz. The average gain is > 4 dBi with ECC

Suggested Citation

  • Asutosh Mohanty & Sudhakar Sahu, 2021. "Integration of coupling resonator as port-isolator and MMLC-Minkowiski fractal loop for Wi-Max rejection in 4-port compact UWB MIMO antenna," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 35(10), pages 1359-1377, July.
    • Handle: RePEc:taf:tewaxx:v:35:y:2021:i:10:p:1359-1377
    DOI: 10.1080/09205071.2021.1890232
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