UWB vivaldi array using frequency selective surface for low RCS applications

摘要

In this paper, an ultra-wideband (UWB) Vivaldi array with low radar cross section (RCS) is presented. An UWB band-stop frequency selective surface (FSS) is introduced to replace the metal reflect board of the array so that the RCS of the antenna can be reduced in a wide frequency band while the radiation performances of the antenna are maintained. The proposed array operates over the frequency band between 5GHz to 12GHz. The results show that the RCS of the proposed Vivaldi array can be reduced effectively by using the UWB FSS.