Reconfigurable Partially Reflective Surface based Beam-Steering Antenna with RCS Reduction

Abstract

In this paper, a beam-steering (BS) antenna based on reconfigurable partially reflective surface (PRS) with a wideband probe feed is proposed. The PRS and feed antenna form a Fabry-Perot resonance cavity, which leads to the improvement in the radiation characteristics of the beam. The abosrbing structure can scatter electromanetic waves propagating externally, and thus reduce the antenna radar cross section. The phase of PRS unit changes with electrical parameters of loaded diodes, thus achieving beam-steering. The beam tilting angle can be deflected to 0°, ±8° and ±16° in elevation when resonating at 5.5 GHz, and the peak gain up to 11.1 dBi is noted.