A multi-frequency antenna

H - Electricity – 01 – Q

Patent

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Details

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

Patent

CA 2286844

A multiple frequency antenna (112) and coupler (10) establish a low noise communication path from a multiple frequency wireless telephone (14) or multiple single frequency telephones, each operating at a different frequency, in a vehicle (16) to the exterior of the vehicle. The coupler (10) includes internal (32) and external elements (22) that are oriented face to face with each other, with a windshield (26) 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. 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 (118), with each radiating element being configured for radiating a respective frequency.

Cette invention se rapporte à une antenne multibande (112) et à un coupleur (10) qui établissent une voie de communication à faible bruit à partir d'un téléphone sans fil multifréquence (14) ou de multiples téléphones monofréquence fonctionnant chacun à une fréquence différente, d'un véhicule (16) vers l'extérieur du véhicule. Ledit coupleur (10) comprend des éléments interne (32) et externe (22) qui sont orientés de manière à se faire face et sont disposés de part et d'autre du pare-brise (26). Ces éléments (22, 32) sont effilés et ils sont juxtaposés de telle sorte que l'extrémité la plus large d'un élément est généralement opposée à l'extrémité la plus étroite de l'autre. Une antenne active multibande (112) est fixée à l'élément externe (22). Cette antenne active comporte plusieurs éléments rayonnants (114, 116) qui sont séparés les uns des autres et sont attachés à une base commune (118), chacun de ces éléments rayonnants étant conçu pour rayonner à une fréquence préétablie.

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