Patent ID: 6657599
Filing Date: 2003-12-02
Classification: H01Q

Abstract:
A slot antenna comprising:a feeding waveguide extending in a longitudinal direction for guiding electromagnetic waves; at least one slot formed in a broad side of the feeding waveguide for emitting an electromagnetic wave; and an arrangement surrounding the slot on an exterior side of the feeding waveguide, for rotating a polarization direction of the electromagnetic wave emitted by the slot; wherein, the slot is formed in the longitudinal direction of the feeding waveguide; the arrangement surrounding the slot is a rectangular polarizer waveguide having an opening at one end which is connected with the broad side of the feeding waveguide and an opening at its other end, which has an aperture via which the waveguide wave excited by the slot in the polarizer waveguide is emitted; relative to the slot, the polarizer waveguide is aligned such that a first transverse axis of the polarizer waveguide forms an angle &agr; with a longitudinal axis of the slot, the angle &agr; representing an angle by which polarization of the electromagnetic wave emitted from the slot into the polarizer waveguide is rotated.