An Integrated Patch Antenna Array with Perfect Electromagnetic Immunity and Low RCS Property

Abstract

In this paper, an integrated structure design is introduced by loading an ultrathin wideband metamaterial absorber to a 2×2 patch antenna array. The radiation character and radar cross section (RCS) property are analyzed using the finite element method. The result shows that there is little difference of the working frequency, matching performance, pattern and gain between the reference antenna and the designed antenna. However, the monostatic RCS has been efficiently reduced in a wide frequency range, with the maximum reduction reaching as much as 13dB.