Wide-Angle Scattering Reconfigurable Antenna Array Based on Antenna Mode Scattering Regulation

In this paper, a wide-angle scattering reconfigurable antenna array based on time-division multiplexing and antenna mode scattering regulation is proposed. The radiation and scattering paths are separated through PIN diode switching, enabling independent regulation of both performances. Each element integrates a tunable reflection phase modulator, realizing dynamic modulation of scattering field phases. By programming the element phases into selected configurations, the proposed antenna array achieves flexible, frequency-agile monostatic RCS reduction across the 4 GHz to 5.6 GHz. Furthermore, by employing multi-bit phase coding, the scattered main beam can be dynamically steered within ±60° under both normal and oblique incidence up to ±60°. To validate the effectiveness of the proposed design, a prototype antenna array is fabricated and measured. The measured results show good consistency with the simulation ones.