Test technology for frequency selective surface material in RF integration

To meet the electrical properties testing requirements for frequency selective surface(FSS) radome on the integrated mast, we first investigate the structure characteristics of both planar and large tridimensional radome. Considering the influence of both transmission and diffraction for planar radome in the anechoic chamber test, a test method based on windows made by radar absorbing materials with metallic backboard is designed to comply with involved test standards. For large tridimensional FSS radome test, we designed a platform which has two layers to rotate on a common axis. Therefore, the insertion loss and uniformity measurements for different part on the large integrated radome are achieved by controlling the platform rotating its two layers in opposite direction. Finally, experiments are shown to validate the applicability of the proposed method.