Broadband U-slot cut microstrip reflectarray antenna with microstrip antenna feed

Broadband U-slot cut rectangular microstrip reflectarray antenna with a U-slot cut rectangular microstrip antenna as a feed is proposed. The 1 × 3, 3 × 1, plus-shaped and 3 × 3 patch arrays have been studied. A parametric study for varying distances between fed patch and the array and for varying U-slot dimensions in reflect array patches is presented. An optimum gain of nearly 11 dBi with bandwidth of around 1100 MHz is obtained in 3 × 3 reflect array configuration.