Analysis and Experimental Demonstration of Reflectarray Antennas in Quasi-Regular Lattices

This paper presents investigations on reflectarray antennas using non-periodic element distributions. The study involves the analysis and design of two reflectarrays based quasi-periodic lattices with rectangular pentagonal profiles, whose performance is compared equivalent comprised regular grids elements. characterization these performed a tailored technique for periodical quasi-periodical grids. proposed uses Method Moments under local periodicity conditions (MoM-LP) to compute field surface each cell then far radiated by aperture. In both aperture are designed provide an optimal adjustment, edge maintaining inter-element spacing similar particularly useful in non-canonical profile apertures, where do not adjust properly shape therefore exhibit less control reflected quasi-regular achieve terms beam shaping, SLL crosspolar discrimination those However, they show improvement fractional bandwidth between 7.4% 11.3%.