Dielectric Huygens' Metasurface Dome Antennas

This letter presents a microwave dielectric metasurface implementation comprising arrays of high permittivity pillars of varying diameter and height embedded in a lower permittivity slab. These dielectric arrays can provide a 490° transmission phase range with zero reflection and low loss and can be fabricated using additive manufacturing techniques in curved structures such as dome antennas. Full-wave simulations of a representative scan loss-reducing dome antenna agree well with analytic calculations that assume an ideal phase sheet. For simplicity, the example dome antenna is a two-dimensional (2-D) cylindrical dome; however, the dielectric metasurface implementation can be extended to 3-D dome designs.