Radiation performances of conformal dielectric reflectarray antennas at sub-millimeter waves

In this paper, dielectric reflectarray antennas mounted on cylindrical surfaces are designed, analyzed, and simulated for conformal high-gain antenna applications at sub-millimeter wave regime. Both convex and concave surfaces with different curvature are investigated, and the radiation performances, such as gains, bandwidth and radiation patterns, of these conformal reflectarrays, are compared with planar designs. The radiation performances are verified numerically through the full-wave simulations.