Broadband leaky wave antenna

Details Broadband leaky wave antenna Broadband leaky wave antenna

H - Electricity

01

Q

H01Q 13/28 (2006.01)

Patent

CA 2574545

An antenna comprises a conically shaped body of dielectric material. Cross- sections of the body have truncated elliptical shape, wherein each shape is truncated substantially through a first focus of the elliptical shape along a truncation line that extends substantially perpendicularly to a main axis of the elliptical shape. The second focus of the elliptical shape lies within the body. An elongated wave carrying structure such as a slot in a conductive ground plane extends substantially along a focal line through the first focus of the elliptical shapes in successive cross-sections. This structure supports transmission and/or reception over a wide range of frequencies. In an embodiment a multi-frequency feed structure is integrated in the ground plane of the antenna.

L'invention concerne une antenne comportant un corps de forme conique de matière diélectrique. Des sections transversales du corps ont une forme elliptique tronquée. Chaque forme est tronquée pratiquement à travers un premier foyer de la forme elliptique le long d'une ligne de troncation qui s'étend sensiblement de manière perpendiculaire à un axe principal de la forme elliptique. Le second foyer de la forme elliptique repose au sein du corps. Une structure porteuse d'ondes allongée, telle qu'une fente dans un plan de sol conducteur, s'étend pratiquement le long d'une ligne focale à travers les premiers foyers des formes elliptiques dans des sections transversales successives. Cette structure supporte une transmission et/ou une réception sur une large gamme de fréquences. Dans un mode de réalisation, une structure d'alimentation multi-fréquence est intégrée dans le plan de sol de l'antenne.

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