Patent ID: 6567054
Filing Date: 2003-05-20
Classification: H01Q

Abstract:
A primary radiator comprising:a waveguide having a closed end and an open end; a probe which protrudes from an internal surface of said waveguide towards a central axis thereof; and a dielectric feeder, which is held by said waveguide, wherein said dielectric feeder includes a radiation part which widens from an aperture of said waveguide, a phase-conversion part which has a plate shape and which is disposed at an angle of substantially 45 degrees from said probe, and an impedance-conversion part which is disposed between the radiation part and the phase-conversion part, said impedance-conversion part becoming narrower while arching towards an interior part of said waveguide, said phase-conversion part, said impedance-conversion part, and said radiation part being formed integrally.