Molero, CarlosDebogovic, T.Garcia-Vigueras, Maria2018-12-132018-12-132018-12-132018-01-0110.1109/MWSYM.2018.8439694https://infoscience.epfl.ch/handle/20.500.14299/152893WOS:000451173600006A polarizing sheet based on a fully metallic structure is here reported for the first time. The polarizer consists of a doubly-periodic arrangement of squared-wave guide sections enclosed by two perforated screens. Though the waveguide sections are highly reactive (operating below cutoff), the perforations placed at both sides of the unit-cell allow for total transmission at a certain frequency band. Within this band, the unit-cell allows additionally to tune its anisotropy in order to transform the linear polarization of an impinging 45 degrees-slant plane wave into circular. An equivalent circuit model of this structure is proposed that reproduces its full-wave scattering properties and explains its principle of operation. A design is performed operating around 20 GHz showing good performance.Engineering, Electrical & ElectronicEngineeringfull-metal polarizercircular polarizationequivalent circuittext::conference output::conference proceedings::conference paper