Circularly polarized dual-band crossed dipole antenna on an artificial magnetic conductor reflector

This paper presents a circularly polarized (CP) dual-band crossed dipole antenna incorporated with an artificial magnetic conductor (AMC) surface that serves as a reflector. Here, two crossed asymmetric dipoles are utilized as the primary radiation elements for a CP dual-band operation. Further, a novel AMC is designed with four T-shaped slits in a unit-cell patch to significantly reduce its second resonant frequency. Consequently, the first and second resonant frequencies of the proposed AMC structure are easily adjusted for the desired dual-band antenna operation.