Microwave antenna system having enhanced band width and reduced cross-polarization

摘要: The antenna system employs a parabolic reflector fed by an offset feed array of circular wave guides located substantially at the focus reflector, but from axis thereof. A plurality aperture tuning mechanisms disposed mouths waveguides waveguide array, and having physical lengths much shorter than one wavelength frequencies involved, are provided to reduce cross-polarization mutual coupling between adjacent feeds. short resonant length these mechanisms, their shape which is chosen generate TM11 mode E-field contour line ensures that they effective over broad bandwidth as 20% or more. Within this bandwidth, act inductive suppressors control both