Wideband, Wide Angle Radome Design for mm-Wave Automotive Radar Systems

We present a radome design that exhibits higher transmission over a wider field of view for millimeter-wave automotive radars . The radome consists of periodic arrangements of unit cell that are etched into a dielectric slab with notches in the form of inverted square pyramids from both sides. To improve field of view coverage, the depths of the pyramidal exclusions have been gradually decreased as we go away from the array center. The design was 3D printed and tested to demonstrate the improved performance.