Antenna system

H - Electricity – 01 – Q

Patent

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Details

H01Q 21/00 (2006.01) H01Q 1/24 (2006.01) H01Q 5/00 (2006.01) H01Q 9/32 (2006.01) H01Q 19/26 (2006.01) H01Q 21/28 (2006.01) H01Q 21/30 (2006.01)

Patent

CA 2236548

The present invention provides an antenna system, which is used for a mobile wireless device and can be accommodated in or withdrawn from a telephone set main unit, whereby element length is shortened and strength is increased while avoiding deterioration of characteristics when the antenna is accommodated in the telephone set main unit. The antenna (40) comprises a helical antenna (41) having a feeding unit (42) and a whip antenna (43) having a feeding unit (44). The whip antenna (43) passes through the helical antenna (41), and the helical antenna (41) and the whip antenna (43) are electrically insulated from each other. Because the whip antenna (43) is designed to pass through the helical antenna (41), an antenna system for mobile wireless communication can be provided, in which element length is shortened and strength is increased.

Cette invention concerne un système d'antenne monté sur une radio mobile, lequel système possède des éléments de longueur réduite ainsi qu'une plus grande résistance sans que l'on assiste à une détérioration des caractéristiques. Ceci reste vrai même lorsque l'antenne, qui peut se loger dans le corps principal de l'appareil téléphonique d'un poste radio portable ou en être retirée, est stockée dans ledit corps principal. Cette antenne (40) comprend une antenne hélicoïdale (41) possédant une section alimentation (42), ainsi qu'une antenne-fouet (43) possédant également une section alimentation (44). L'antenne-fouet (43) passe à travers l'antenne hélicoïdale (41), les deux antennes (42, 43) étant toutefois isolées électriquement l'une de l'autre. Etant donné que l'antenne (43) passe à travers l'antenne (41), il est possible d'obtenir un système d'antenne pour radio portable qui possède des éléments d'une longueur réduite ainsi qu'un plus grande résistance.

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