Loop driver for pots, xdsl, or integrated pots/xdsl interface

Details Loop driver for pots, xdsl, or integrated pots/xdsl interface Loop driver for pots, xdsl, or integrated pots/xdsl interface

H - Electricity

04

M

H04M 1/00 (2006.01)

Patent

CA 2375153

A driver circuit (180) comprising a transformer having a primary winding (106, 108) for coupling to a subscriber loop and a secondary winding (104) for coupling to an interface circuit, a feedback circuit for coupling said primary winding to said secondary winding to provide a predetermined impedance match between said interface circuit and said loop over a predetermined frequency band of said driver circuit. In a preferred embodiment, the interface circuit is integrated line card for supporting both POTS and ADSL.

Circuit de commande (180) comprenant un transformateur possédant un premier enroulement (106, 108) servant à effectuer un raccordement à une ligne d'abonné et un deuxième enroulement (104) servant à effectuer un raccordement à un circuit d'interface, un circuit de rétroaction servant à raccorder ledit premier enroulement audit deuxième enroulement, de manière à effectuer une correspondance d'impédance prédéterminée entre ledit circuit d'interface et ladite ligne sur la totalité d'une bande de fréquence prédéterminée dudit circuit. Dans un mode de réalisation préféré, ce circuit d'interface consiste en une carte de ligne intégrée servant à supporter à la fois POTS et ADSL.

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