Directional hf antenna for a helicopter

H - Electricity – 01 – Q

Patent

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Details

H01Q 1/28 (2006.01)

Patent

CA 2101903

Disclosed is a combined directional antenna and rotor blade 101 for a helicopter 100. The antenna comprises three or more electrically non-conductive rotor blades 200, each having an electrical conductor 210 positioned parallel to the major axis of a respective rotor blade 200. Two of the electrical conductors 210, having angular positions nearer to a predetermined angular position are connected via a connections means 700 to apparatus for transmission or reception of radio waves. The remaining conductors may either be connected to the body of the helicopter or supplied with a signal out of phase compared to that supplied to the two electrical conductors. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

'invention est une antenne directive incorporée à une pale de rotor 101 d'hélicoptère 100. L'antenne est montée sur trois pales de rotor électriquement non conductrices ou plus portant chacune un conducteur électrique 210 fixé parallèlement à l'axe principal de chacune des pales de rotor 200. Deux des conducteurs électriques 210, dont les positions angulaires sont voisines d'une position angulaire prédéterminée, sont connectés par le biais d'un dispositif de connexion 700 à un appareil d'émission ou de réception d'ondes radio. Les autres conducteurs peuvent être connectés au fuselage de l'hélicoptère ou peuvent recevoir un signal en opposition de phase avec le signal fourni aux deux premiers conducteurs. Un système de communication comportant un appareil d'émission ou de réception d'ondes radio est également révélé.

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Profile ID: LFCA-PAI-O-1762010

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