Characterization of a mm-Wave Automotive Radar with a Low-RCS MIMO Antenna System

Abstract

Millimeter-wave (mm-wave) automotive radars are typically installed behind the car fascia. However, the placement behind the bumper can cause multiple reflections, which may lead to a wrong estimation of the direction of arrival (DoA) of the target. The use of low-RCS (radar cross-section) antennas can mitigate them. This work presents the characterization of a mmwave frequency-modulated continuous-wave (FMCW) MIMO (multiple-input multiple-output) radar equipped with a low-RCS antenna systems. The measurement results demonstrate that such an antenna configuration can reduce the angular error in the DoA estimation and increase the robustness of the system.