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UWB four ports MIMO antenna based on inscribed Fibonacci circles

Author

Listed:
  • E. A. Andrade-González
  • J. A. Tirado-Méndez
  • H. Jardón-Aguilar
  • M. Reyes-Ayala
  • A. Rangel-Merino
  • Michael Pascoe-Chalke

Abstract

In this paper, a novel ultrawideband (UWB) four ports multiple-input multiple-output (MIMO) antenna was developed. The MIMO antenna is based on four wideband circular monopoles with inscribed Fibonacci circles in order to reduce the size and stabilize the impedance over a wider bandwidth. The array shows a frequency bandwidth from 3.6 GHz to 13.8 GHz, obtaining inter-port coupling below −15 dB over the entire bandwidth. Convergent TARC curves over the entire bandwidth exhibit values less than −25 dB and high stability against phase changes in the incoming signals to the different radiators. Finally, the UWB MIMO antenna proposed generates a quasi-omnidirectional radiation pattern with orthogonal properties among radiators, demonstrated by a very small Envelope Correlation Coefficient (ECC) value, averaging 0.005.

Suggested Citation

  • E. A. Andrade-González & J. A. Tirado-Méndez & H. Jardón-Aguilar & M. Reyes-Ayala & A. Rangel-Merino & Michael Pascoe-Chalke, 2021. "UWB four ports MIMO antenna based on inscribed Fibonacci circles," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 35(9), pages 1202-1220, June.
    • Handle: RePEc:taf:tewaxx:v:35:y:2021:i:9:p:1202-1220
    DOI: 10.1080/09205071.2021.1873196
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