Electrodynamic characteristics of horn microwave antennas made of graphene-containing carbon-composite materials

Electrodynamic characteristics of the $L$-and $C$-range horn antennas made of carbon-composite materials with graphene-containing binding substance are studied. The main attention is paid to the polarization characteristics of the $L$-range antennas with a polarization unit based on a circular waveguide that generates elliptically polarized radiation.