Patent ID: 6219001
Filing Date: 2001-04-17
Classification: H01Q

Abstract:
A tapered slot antenna comprising:a substrate having an end; anda metal layer disposed on the substrate, the metal layer having a first outer side, a second outer side, a first inner side, and a second inner side, the first and second inner sides defining a tapered slot having a closed end and an aperture above the end of the substrate, the tapered slot being configured to radiate electromagnetic waves outward from the aperture;wherein the metal layer includes field generating portions configured to generate an electric field having a phase opposite and counteractive to an electric field component radiated from the aperture and perpendicular to the substrate, the electric field generating portions being located between respective of the first and second inner sides of the metal layer and the first and second outer sides of the of the metal layer;wherein the electric field generating portions further comprise:elongated slots defined by the metal layer and extending parallel to the direction of electromagnetic waves radiated from the aperture, the elongated slots being located between respective of corrugated portions and the tapered slot.