Beam-steering 1 Cross polarizations 1 Discharge (electric) 1 Gaseous plasma antenna 1 Gaseous plasma antennas 1 Gaseous plasmas Intelligent reflecting surface 1 Linear-to-circular 1 Magnetostatic waves 1 Magnetostatics 1 Microwave antennas 1 Plasma antenna 1 Plasma density 1 Polarization 1 Polarization conversion 1 Reflecting surface 1 Slab 1 Surface discharges 1 Surface waves 1 beam-steering 1 cross-polarisation 1 intelligent reflecting surfaces 1 linear-to-circular 1 polarization conversion 1