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A compact broadband high-isolation quad-port MIMO antenna for intelligent driving application

Author

Listed:
  • Shengjie Chen
  • Shuo Yu
  • Xiaoming Liu
  • Hongzhu Xi
  • Aiqing Zhang
  • Youhong Feng

Abstract

A compact quad-port multi-input multi-output antenna for intelligent driving is proposed. The antenna features orthogonal microstrip patch elements and a centrally integrated parasitic structure with four pairs of rotationally symmetric straplines to enhance port isolation. With compact dimensions of 0.92λ × 0.92λ × 0.03λ, the antenna achieves an ultra-wide bandwidth spanning 5.11 GHz – 10.53 GHz, covering bands including 5G WLAN (5.15–5.85 GHz), V2X (5.905 GHz – 5.925 GHz), 6G IMT (6.425–7.125 GHz), and UWB (7.163–8.812 GHz). Experimental results demonstrate exceptional performance. The coupling coefficients remain below −24.16 dB in the entire band, and better than −34.15 dB in the V2X band. The ECC under 0.004, and the DG is better than 9.97 dB with the CCL less than 0.4 bits/s/Hz. Orthogonal element arrangement ensures omnidirectional radiation coverage, addressing the challenges of spatial constraint in vehicular environments.

Suggested Citation

  • Shengjie Chen & Shuo Yu & Xiaoming Liu & Hongzhu Xi & Aiqing Zhang & Youhong Feng, 2025. "A compact broadband high-isolation quad-port MIMO antenna for intelligent driving application," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 39(11), pages 1300-1322, July.
    • Handle: RePEc:taf:tewaxx:v:39:y:2025:i:11:p:1300-1322
    DOI: 10.1080/09205071.2025.2502838
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