Device for fastening an excitation element in a metal...

Details Device for fastening an excitation element in a metal... Device for fastening an excitation element in a metal...

H - Electricity

01

Q

H01Q 1/00 (2006.01) H01P 5/103 (2006.01) H01Q 1/12 (2006.01) H01Q 13/24 (2006.01) H01Q 13/28 (2006.01)

Patent

CA 2239403

A device is provided for fastening an excitation element (2) in a metal waveguide (3) of an antenna (1) and for electrically connecting the same to a coaxial line (4) arranged outside the waveguide (3), and which is cost effective and in which low power losses occur. The device comprises a basic member (6), which seals an opening in the waveguide (3), has a bore (6.1), and a metal hollow cylinder (9), through which an inner conductor of the coaxial line (9) is guided, which hollow cylinder has a first section (9.1) plugged into the first bore (6.1), and which has a second section (9.2), over which an end region (10) of an outer conductor of the coaxial line (4) is pushed. A first end (2.1) of the excitation element (2) is fastened on one end (12) of the inner conductor.

Dispositif économique et à faible perte de tension, permettant de fixer un élément d'excitation (2) dans le guide d'ondes métallique (3) d'une antenne (1) et de le connecter directement à une ligne coaxiale (4) placée à l'extérieure du guide d'ondes (3). Le dispositif comprend : une pièce de base (6), munie d'un orifice (6.1), qui ferme une ouverture dans le guide d'ondes (3); et un cylindre métallique creux (9) servant à guider un conducteur intérieur de la ligne coaxiale (9). Une première partie (9.1) du cylindre creux est branchée dans le premier orifice (6.1), tandis qu'une extrémité (10) d'un conducteur extérieur de la ligne coaxiale (4) est fixée par-dessus la seconde partie (9.2) du cylindre. Une première extrémité (2.1) de l'élément d'excitation (2) est connectée à une extrémité (12) du conducteur interne.

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