A coupler for a multi-frequency antenna

H - Electricity – 01 – Q

Patent

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Details

H01Q 1/12 (2006.01) H01P 5/18 (2006.01) H01Q 1/32 (2006.01) H01Q 5/00 (2006.01) H01Q 9/30 (2006.01) H01Q 9/32 (2006.01) H01Q 21/30 (2006.01)

Patent

CA 2286841

A multiple frequency coupler (10) establishes a low noise communication path, through the windshield of a vehicle (16), from a multiple frequency wireless telephone (14) or multiple single frequency telephones, each operating at a different frequency, in the vehicle to the exterior of the vehicle. The coupler (10) includes two preferably like-shaped internal and external elements (22, 32) that are oriented face to face with each other, with the windshield sandwiched between them. Each element (22, 32) is tapered, and the elements are juxtaposed with each other such that the wider end of one element is generally opposite the narrower end of the other. Also, a multiple frequency radiator (112) is attached to the external element (22). The radiator includes plural radiating elements (114, 116) that are separated from each other and that are attached to a common base, with each radiating element being configured for radiating a respective frequency.

Un coupleur multifréquence (10) établit une voix de communicationà faible bruit, passant par le pare-brise d'un véhicule (16), à partir d'un téléphone sans fil (14) multifréquence ou de plusieurs téléphones monofréquence, chacun fonctionnant à une fréquence différente, de l'intérieur vers l'extérieur du véhicule. Le coupleur (10) comprend deux éléments (22, 32) interne et externe, de préférence identiques, qui sont orientés de façon à être opposés l'un à l'autre, et entre lesquels le pare-brise est pris en sandwich. Chacun de ces éléments (22, 32) est de forme conique, et tous les éléments sont juxtaposés de sorte que l'extrémité la plus large d'un élément soit en général opposée à l'extrémité la plus étroite de l'autre. Un élément rayonnant (112) multifréquence est également fixé à l'élément externe (22). Cet élément rayonnant comprend plusieurs éléments rayonnants (114, 116) séparés les uns des autres et fixés à une base commune, chacun de ces éléments rayonnants étant conçus de façon à rayonner une fréquence respective.

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