A FEEDER HORN ANTENNA FOR A REFLECTOR ANTENNA

摘要

A feeder horn antenna for a reflector antenna is provided to improve the crossing polarizing in comparison with a conventional horn antenna under the condition using the same reflective plate and the same frequency. A feeder horn antenna for a reflector antenna radiates electromagnetic waves to a reflective plate of a reflector antenna and includes a first circular waveguide pipe(410) connected to a transceiver and filled with the air to transmit the electromagnetic waves, a second circular waveguide pipe(420) having a cylindrical shape with a diameter less than that of the first circular waveguide pipe(410) and filled with a predetermined dielectric material having an end protruded to be bonded to the first circular waveguide pipe(410) and the other end curved outwardly to radiate the electromagnetic waves to the reflective plate, and a pattern matching unit(460) composed of a notch-shaped conductor to surround an outer side of the bonded portion between the first circular waveguide pipe(410) and the second circular waveguide pipe(420).