Cross polarization in Cassegrainian and front-fed paraboloidal antennas

This paper presents the formulas relating feed polarization to aperture plane polarization, shows that the cross polarization in reflector antennas is closely related to the feed design, gives the ideal feed polarizations yielding zero aperture cross-polarized fields, and also puts an end to the controversy recently arisen about the relative susceptibility of Cassegrainian and front-fed antennas to depolarization effects.