​The 24GHz millimeter-wave obstacle avoidance antenna array transmits with relatively large beamwidth and works on monopulse principle on-receive  and provides relatively high resolution because of very small beamwidth. Integrated with MMIC radar electronics board, it can be used in many high-end applications such as collision avoidance in vehicles, robotics, industrial applications, smart traffic and UAVs. Mounted on a rotating platform, the array can be used for perimeter security  and surveillance.