RCS Reduction of Integrated Antenna Arrays with Resistive Sheets

Abstract

Edge diffraction can be a major source of high radar visibility for integrated array antennas. In this paper, it is shown that tapered resistive sheets at the edges of the array can be used to transform the scattering properties of the antenna to that of a metallic plate and hence reduce the radar cross section. Numerical examples of an array of self-complementary patches and a bandpass frequency selective radome are presented to illustrate the results. The RCS reduction is very good for TE polarization but not as efficient for the TM polarization.