An antenna system, comprising: a planar antenna having a planar antenna aperture; and a linear-to-circular radio frequency, RF, polarizer including a rotatable meanderline polarizer including a plurality of meanderline conductor patterns, and a rotatable gridline polarizer including a plurality of conductors arranged in a grid pattern, wherein the gridline polarizer is spaced apart from the meanderline polarizer by a first prescribed distance and the gridline polarizer is spaced apart from the planar antenna aperture of the planar antenna by a second prescribed distance, wherein the planar antenna comprises a variable inclination continuous transverse stub,VICTS, scanning antenna including a feed, and wherein the scanning antenna is arranged relative to the meanderline polarizer to communicate RF signals between the planar antenna aperture and the meanderline polarizer, wherein main beam scanning in θ is achieved via rotation of the planar antenna aperture with respect to the feed, and wherein Φ-scanning of the main beam is achieved by simultaneous rotation of the feed, the planar antenna aperture, the gridline polarizer and the meanderline polarizer, characterized in that the meanderline polarizer is configured to provide a difference between an optimum meanderline axis rotation angle (ΦMLopt) and a Φ-path of the main beam (Φ) that varies with antenna scan angle; and the gridline polarizer is configured to provide a difference between an optimum gridline axis rotation angle (ΦGLopt) and the Φ-path (Φ) of the main beam that varies with antenna scan angle, wherein the meanderline polarizer is configured to synchronize the difference between the optimum meanderline axis rotation angle (ΦMLopt) and a Φ-path (Φ) of the main beam with a difference that produces optimum axial ratio versus antenna scan angle, and the gridline polarizer is configured to synchronize the difference between the optimum gridline axis rotation angle (ΦGLopt) and the Φ-path (Φ) of the main beam with a difference that produces optimum axial ratio versus antenna scan angle. a planar antenna having a planar antenna aperture; and a linear-to-circular radio frequency, RF, polarizer including a rotatable meanderline polarizer including a plurality of meanderline conductor patterns, and a rotatable gridline polarizer including a plurality of conductors arranged in a grid pattern, wherein the gridline polarizer is spaced apart from the meanderline polarizer by a first prescribed distance and the gridline polarizer is spaced apart from the planar antenna aperture of the planar antenna by a second prescribed distance, wherein the planar antenna comprises a variable inclination continuous transverse stub,VICTS, scanning antenna including a feed, and wherein the scanning antenna is arranged relative to the meanderline polarizer to communicate RF signals between the planar antenna aperture and the meanderline polarizer, wherein main beam scanning in θ is achieved via rotation of the planar antenna aperture with respect to the feed, and wherein Φ-scanning of the main beam is achieved by simultaneous rotation of the feed, the planar antenna aperture, the gridline polarizer and the meanderline polarizer, characterized in that the meanderline polarizer is configured to provide a difference between an optimum meanderline axis rotation angle (ΦMLopt) and a Φ-path of the main beam (Φ) that varies with antenna scan angle; and the gridline polarizer is configured to provide a difference between an optimum gridline axis rotation angle (ΦGLopt) and the Φ-path (Φ) of the main beam that varies with antenna scan angle, wherein the meanderline polarizer is configured to synchronize the difference between the optimum meanderline axis rotation angle (ΦMLopt) and a Φ-path (Φ) of the main beam with a difference that produces optimum axial ratio versus antenna scan angle, and the gridline polarizer is configured to synchronize the difference between the optimum gridline axis rotation angle (ΦGLopt) and the Φ-path (Φ) of the main beam with a difference that produces optimum axial ratio versus antenna scan angle.