Radar Absorber

thingiverse

Radar-absorbing shielding is a vital tool for measuring radar signals without interference. We've used this technology to conduct accurate measurements with a 60 GHz radar transceiver, specifically the Acconeer XR112 model. Radar sensors operating within the 60 or 86 GHz frequency range are commonly employed in self-driving cars to detect other vehicles and pedestrians in their surroundings. A transceiver sends out a radar pulse, which is then reflected back by objects nearby. By measuring the time it takes for the radar wave to bounce back, we can determine the distance to these objects. When performing lab tests, it's crucial to isolate reflections from the object of interest while minimizing reflections from surrounding surfaces like tables and walls. This is where radar-absorbing shielding proves particularly useful. Its pyramidal design is engineered to scatter and absorb radiation rather than reflecting it back. We've created multiple plates using this shielding material and strategically placed them around our experiment. A crucial note: when fabricating these shields, use ESD-conductive filament exclusively, and mount them on an aluminum plate. This setup will effectively scatter radio frequency waves into the valleys, where they'll be absorbed. The metallic backing ensures the experiment remains isolated from external sources of interference.