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High-isolated, low correlation and wide frequency reconfigurable (2.1–4.2 GHz) MIMO antenna for cognitive radio applications

Author

Listed:
  • Nagesh Kallollu Narayaswamy
  • Nirupama Malavalli Prasad
  • Sweta Singh
  • Rakesh Kumar Singh
  • Akhilesh Kumar
  • Brijesh Mishra

Abstract

This paper proposes a unique and small (2508 mm2) penta-band frequency agile MIMO antenna based on RF switches for cognitive radio mobile, WLAN, WiMAX, and wireless sensing applications. Three RF switches generate five resonant bands at 2.1, 3, 3.5, 4, and 4.2 GHz in four usable states-100, 011, 111, 100, and 000, respectively. The proposed antenna's fractional bandwidth was 4.95 % (simulated) and 5.5 % (measured) in state-000, 3.09 % (simulated) and 2.8 % (measured) at a lower frequency (2.1 GHz), 2.12 % (simulated) and 2 % (measured) at higher frequency (4.2 GHz) in state-100, 12.5 % (simulated) and 12 % (measured) in state-011, and 4.6 % (simulated) and 4.7 % (measured) in state-111. A large peak gain of 3.6 dB at 4 GHz, maximum isolation of 32.2 dB at 3.5 GHz, significant radiation efficiency of 93.7% at 4GHz is obtained. At 4 GHz, a strong peak gain of 3.6 dB, maximum isolation of 32.2 dB at 3.5 GHz, and considerable radiation efficiency of 93.7 % are realised. For this work, MIMO parameters such as ECC (approx. 0), DG (approx.10dB), TARC (

Suggested Citation

  • Nagesh Kallollu Narayaswamy & Nirupama Malavalli Prasad & Sweta Singh & Rakesh Kumar Singh & Akhilesh Kumar & Brijesh Mishra, 2023. "High-isolated, low correlation and wide frequency reconfigurable (2.1–4.2 GHz) MIMO antenna for cognitive radio applications," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 37(5), pages 605-628, March.
    • Handle: RePEc:taf:tewaxx:v:37:y:2023:i:5:p:605-628
    DOI: 10.1080/09205071.2022.2158374
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