Painted styrene radome for foreign objects and debris detection radar in W-band

In this paper a new radome structure made from styrene foam coated with Efrethan^reg is described together with experiments on its performance. Sufficient strength to endure environmental stress is obtained from the Efrethan layer. Optimal losses are obtained from 1 mm or 2 mm coating at three frequencies in W-band. The developed radome performed with - .18 dB loss at 76 GHz without any disturbance of antenna pattern.