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Eight port millimeter wave HMSIW MIMO antenna array for V2V communication.

Gunjan Srivastava1, Amit Kumar2, Vimal Kumar2

  • 1Department of Electronics and Communication Engineering, Graphic Era (Deemed to Be) University, Dehradun, 248002, India.

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|November 20, 2025
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Summary

This study presents an eight-port millimeter-wave multiple-input-multiple-output (MIMO) antenna array for vehicle-to-vehicle (V2V) communication. The designed antenna achieves high gain and isolation, making it suitable for V2V systems.

Keywords:
AntennaEight-portHMSIWMIMOSDG 11 (Sustainable cities and communities)SDG 9 (Industry, innovation and infrastructure)V2V

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Area of Science:

  • Electrical Engineering
  • Antenna Theory
  • Wireless Communication

Background:

  • Millimeter-wave (mmWave) frequencies are crucial for high-bandwidth communication.
  • Vehicle-to-vehicle (V2V) communication demands robust and high-performance antenna systems.
  • Multiple-Input-Multiple-Output (MIMO) antenna technology enhances wireless communication reliability and data rates.

Purpose of the Study:

  • To design and develop an eight-port mmWave MIMO antenna array for V2V communication at 28 GHz.
  • To investigate the performance of half-mode substrate integrated waveguide (HMSIW) antenna elements in a V2V context.
  • To evaluate the MIMO performance, link budget, and potential for array configuration enhancement.

Main Methods:

  • Design of an eight-port MIMO antenna array using 2x2 HMSIW elements arranged in a regular octagon.
  • Utilizing a corporate feeding network with a two-stage in-phase T-junction power divider.
  • Evaluation of antenna performance including gain, inter-port isolation, envelope correlation coefficient (ECC), and diversity gain (DG).
  • Link budget analysis considering path losses and link margins.
  • Extension of the design to a 4x4 array configuration for further performance enhancement.

Main Results:

  • The designed eight-port MIMO antenna array operates at 28 GHz with a volume of 0.72 λ₀³.
  • Achieved peak realized gain exceeding 12.2 dBi and inter-port isolations greater than 30 dB without decoupling networks.
  • MIMO performance metrics (ECC and DG) were within acceptable limits.
  • Link budget analysis confirmed suitability for V2V communication.
  • The 4x4 array configuration showed potential for enhanced gain and radiation characteristics.

Conclusions:

  • The developed eight-port mmWave MIMO antenna array demonstrates excellent performance metrics suitable for V2V communication.
  • The HMSIW technology and array configuration provide high gain and isolation without complex decoupling.
  • The design shows promise for future V2V communication systems, with potential for further optimization through larger array configurations.