Multilayer Minkowski Reflectarray Antenna With Improved Phase Performance

We propose a multilayer unit cell consisting of Minkowski fractal-shaped reflector with aperture coupled phasing stubs to obtain broad phase range for reflectarray antenna smaller size and interelement spacing compared some other studies in the literature. In study, simulations are conducted using high-frequency structure simulator (HFSS) program Floquet Port incidence. A two cycles very low reflection loss is designed. About 21.9% shrinkage achieved patch surface area fractals. Subsequently, proposed used design fabricate full-scale 221-element antenna. At 10 GHz, simulation results measured data good agreement observed.