Abstract: The combination device includes a first pair of series coupled first and second magnetically coupled coils, to which a first DSL line and a first DSL transmission line are electrically coupled, and a second pair of series coupled first and second magnetically coupled coils, to which a second DSL line and a second DSL transmission line are electrically coupled. A third DSL line is coupled to a first coupling element between the first and the second coils of the first pair, and to a second coupling element between the first and the second coils of the second pair. The combination device is located in a phantom injection module provided with at least five terminals respectively associated to the first DSL line, the second DSL line, the third DSL line, the first DSL transmission line and the second DSL transmission line.

Abstract: The combination device includes a first pair of series coupled first and second magnetically coupled coils, to which a first DSL line and a first DSL transmission line are electrically coupled, and a second pair of series coupled first and second magnetically coupled coils, to which a second DSL line and a second DSL transmission line are electrically coupled. A third DSL line is coupled to a first coupling element between the first and the second coils of the first pair, and to a second coupling element between the first and the second coils of the second pair. The combination device is located in a phantom injection module provided with at least five terminals respectively associated to the first DSL line, the second DSL line, the third DSL line, the first DSL transmission line and the second DSL transmission line.

Abstract: Electronic circuit (F) including input terminals (IN1,IN2) and output terminals (OUT1, OUT2) between which a desired filter transfer function (F(s) )is realised by said electronic circuit when an input signal is applied between said input terminals (IN1,IN2) is characterised in that said electronic circuit (F) includes at least one first passive series element (Z1) having a first series impedance, a first terminal of which is coupled to one of said input terminals (IN1), a second terminal of which is coupled to one of said output terminals (OUT1), said electronic circuit further including an active circuit (G) coupled between said output terminals (OUT1,OUT2), and including a filter circuit (H) with a filter transfer function (H(s)) such that said desired filter transfer function (F(s)) is obtained.