This work presents the design and experimental validation of a dual-band fully reconfigurable circularly polarized (CP) reflectarray (RA) antenna for satellite communication applications in Ku-band. The proposed structure operates with downlink uplink beams at frequency bands [10.8–11.8] [14–15.4] GHz, respectively. Simultaneous independent beam control is provided over each two bands. constitu...

A transmission line model is adopted for the analysis of slot-coupled microstrip reflectarrays. The current on the equivalent impedance for the single radiating element is used to obtain the reflectarray phase design curve. Computational costs are drastically reduced with respect to theoretical full-wave analysis. Numerical and experimental validations are presented on the phase curve useful fo...

A novel polarized reflectarray is designed, fabricated, and experimentally characterized to show its flexibility efficiency control wave generation focusing of orbital angular momentum (OAM) vortices with desirable OAM modes in the microwave frequency regime. In order rigorously study OAM, a versatile analytical theory proposed theoretically compensation phase reflectarray. Two prototypes refle...

This paper presents a novel approach to synthesizing curved reflectarrays using Geometrical Optics (GO). It introduces the concepts of virtual normal and path length shift, which enable vector-based formulation problem that can be solved ray tracing techniques. The is applied for design two different versions Dual Bifocal Reflectarray with parabolic main surface flat subreflectarray. first vers...