Tapered Resistive Sheets and FSS Absorber Loading for the Wideband RCS Reduction of the Elliptic Surface at TM Polarization

Abstract

A wideband radar cross Section (RCS) reduction of the elliptic surface at TM polarization is reported in this communication. The main scattering sources and the corresponding scattering mechanisms of the elliptic surface are accurately identified based on the inverse synthetic aperture radar (ISAR) imaging technique and the high-frequency approximation theory. The frequency selective surface (FSS) absorber is employed to suppress the specular reflection, and the tapered resistive sheets (TRSs) are used to handle the scattering from the trailing edges. Samples have been fabricated and measured in the anechoic room, both the simulation and measurement results illustrate that 10 dB RCS reduction (RCSR) is achieved within 1.35–4.9 GHz at TM polarization.