Element design for dual circularly polarized reflectarrays with dual linearly polarized feed

In this paper, a novel single-layer broadband subwavelength multi-resonance element is proposed to design a dual circularly polarized (CP) reflectarray with a dual linearly polarized (LP) feed. The simulated results show an adequate phase range over 3600 and low mutual coupling between the two orthogonal polarizations of the element. Also, a superior bandwidth performance has been verified, compared to conventional cross-dipole element.