e-Prime: Advances in Electrical Engineering, Electronics and Energy (Jun 2023)
Planar polarization rotation reflective surface for X-band RCS reduction in microstrip patch antenna
Abstract
In this study, a rectangular microstrip patch antenna (MSPA) with a low X-band radar cross section (RCS) is proposed. The existing RCS reduction involves many layers, which raises design complexity. The research challenge is to lower the X-band RCS of a patch antenna using single-layer while keeping the good radiation performance. A polarization rotation reflective surface (PRRS) made up of unit cells arranged in the same plane encircles the proposed MSPA. This MSPA's radiation pattern and scattering capabilities are investigated and the effective RCS reduction in the X-band frequency from 8 to 12 GHz is achieved by arranging the unit cells of the newly developed PRRS. The proposed MSPA, which has an impedance bandwidth (BW) of 8.98 GHz to 10.99 GHz and a low X-band RCS, eliminates the requirement for multiple layers in the antenna. In addition, the antenna has the length and width of 23 mm and 41 mm with 14 unit cells and radiating elements of antenna is 9 mm x 6 mm and the substrate have the thickness of h = 2 mm.
