Design and Investigation on Metasurface-Loaded MIMO Al2O3 -Built Dielectric Antenna with Enhanced Isolation and Reduced Radar Cross-section
摘要
This study presents a two-port antenna design with reduced radar cross-section (RCS) and high isolation. The proposed antenna supports circular polarization with in operating region (10.32–11.58 GHz) by exciting alumina ceramic using a tilted rectangular slot along with a psi-shaped printed line. An electromagnetic band gap (EBG) metasurface placed on the lower side of the substrate adds two important features, i.e., suppresses the monostatic RCS by less than − 40 dBsm and enhances the isolation value by more than 35 dB. The experimental results confirm the operation of the proposed antenna in between 10.1 GHz and 13.42 GHz. The antenna design supports a broadsided gain of around 7.0 dBi within the working range. With broadside radiation and strong diversity, the proposed antenna is well-suited for X-band radar applications.