Microwave circular polarizer based on bifilar helical particles

In this paper, we describe practical realization of a new type of circular polarizer based on metallic double-stranded (ds-) array particles, operating under normal to the helix axis wave propagation. The latter is the key distinction of this array from a number of analogous operating under propagation along the helix axis. Theoretical foundation of ds-helices polarization selectivity is given for a wave propagation perpendicular to the helix’s axis. A computer model is created to study electrodynamic properties of arrays of helices, which confirms the circular polarizer feasibility for a microwave wavelength region.