A Metasurface-based Dual Passband Filter with Sharp Rejection Band for Navigational Applications

Abstract

This paper presents a metasurface-based closely spaced dual passband filter in L-band. A sharp rejection feature has been introduced within the two passbands in the design. The proposed structure operates at 1221.2 MHz and 1572.2 MHz together with a rejection at 1396.7 MHz. The proposed structure is angularly stable in nature as well as polarization independent owing to the four-fold symmetry in the unit cell making it a potential candidate for radar navigational applications. © 2024 IEEE.