Broadband xDSL transceiver

摘要

Broadband xDSL transceiver for transmitting and receiving signals in a predetermined broadband frequency range (”F) via a signal line which has a complex line impedance (Z L ), wherein the xDSL transceiver (1) comprises
a line driver (3) for driving a transmission signal applied to a signal input (4a, 4b) of said line driver (3) via said signal line;
a receiver (8) for evaluating a reception signal received via said signal line and applied to a signal input of said receiver (8);
an echo canceling bridge (10) for canceling the transmission signal at the signal input (9a, 9b) of said receiver (8);
a sense impedance (11) connected to the signal line;
a feedback resistor network (15a, 15b) provided between the sense impedance (11) and the signal input (4a, 4b) of said line driver (3) performing a synthesized termination impedance (Z T ) of the xDSL transceiver (1) as a product of the sense impedance and an impedance synthesis factor (G);
wherein the sense impedance (11) is a complex impedance (Z S ) so that the synthesized termination impedance (Z T ) matches the line impedance (Z L ) over the predetermined broadband frequency range (”F).