Perforated Dielectric Reflectarray in Ka-band

This paper proposes a single-layer perforated dielectric reflectarray antenna that operates in Ka-band. The unit-cell is made up of a dielectric element perforated by a centered square hole, whose size is used to control the phase of the reflection coefficient. This cell has been used to design a 52x52 offset reftectarray working at 30 GHz, whose numerical analysis proves that it has good radiation features. The proposed configuration is particularly convenient since Additive Manufacturing processes can be exploited for its fabrication.