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

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.