A Dual-Polarized Wideband Reflectarray

This paper presents a dual-polarized unit cell, which can achieve a linear phase variation of 360° by adjusting the length of each element’s embedded meander slots. A circular reflectarray with an offset-fed horn is designed. The simulations indicate that this design can obtain 36.5% and 39.8% 1-dB gain bandwidth with maximum aperture efficiency of 69.2% and 68.3% respectively for horizontal and vertical polarizations.