EM Wave Polarization Transformation by a Reflectarray of Variable-Length Shorted Rectangular Waveguides

Abstract

Polarization patterns of the electromagnetic field scattered on a two-dimensional variable-length periodic reflectarray of shorted waveguides are studied. An array master cell contains two shorted rectangular waveguides with mutually orthogonal walls. The reflected wave Stokes parameters are calculated vs. shorted-waveguide lengths and frequencies. The cability of transforming a linearly polarized wave into the one with either orthogonal polarization or circular polarization of the left- or right-handed rotation of electric field vector is shown.