Simulation Results of a Foldable Reflectarray Composed of Four Triangular Notched Patches

A foldable reflectarray antenna is proposed in this paper. The reflection element of the reflectarray is composed of four triangular elements to avoid a folding pattern. The reflection elements show that 330-degree phase tuning ability. An 18×18-element reflectarray antenna is designed and simulation shows 25.4-dBi directivity and −26.6-dB cross-polarization.