Low-Profile MIMO Antenna System for Vehicular Wi-Fi 7 Wireless Communications

A low-profile 2x2 MIMO antenna system for Wi-Fi 7 is proposed in this paper that can be used in the automotive industry. Due to its physical properties and RF performance, the design can be placed in hidden locations such as front side mirrors, and front dashboard to provide coverage inside and outside the vehicle or even integrated in a low-profile housing on the vehicle’s roof. The proposed design is based on Planar Inverted-F Antenna (PIFA) with unique slots across its plane to cover the 2.4GHz band (2400-2495MHz), 5GHz band (5150-5895MHz), and 6GHz band (5945-7125MHz). The MIMO system is simulated using HFSS software and the results are presented in terms of reflection coefficients, passive isolation, surface current distribution, combined radiation patterns, and ports radiated efficiencies. The design shows very good RF characteristics which makes it an excellent candidate to be used for vehicular Wi-Fi 7 to meet the requirements of wider channel bandwidth, higher throughput rates, and increased omnidirectional coverage area with minimal interference.