Enhanced Echo Cancellation in Full-Duplex Communication

摘要

Embodiments relate to enhancing echo cancellation in a transceiver integrated circuit (IC) for full-duplex communication by providing a signal path connected to a dummy driver that replicates a signal path between a main driver and a counterpart transceiver IC to cause a duplicated signal generated by the dummy driver to more closely replicate a sending signal generated by the main driver. The signal path connected to the dummy driver includes circuit elements having transmission line parameters and RLC parameters that replicate transmission line parameters and RLC parameters of circuit elements in the signal path between the main driver and the counterpart transceiver IC.

主权项

1. A full-duplex transceiver, comprising:
an integrated circuit package comprising:
a first driver coupled to a data input circuit to receive a digital signal and generate a first signal to a first pad according to the received digital signal, the first pad coupled to a communication channel between the full-duplex transceiver and a counterpart full-duplex transceiver,a second driver coupled to the data input circuit to receive the digital signal and generate a second signal corresponding to the first signal to a second pad according to the digital signal received from the data input, the second pad coupled to a termination in the full-duplex transceiver, andan echo cancelation circuit having an output, a first input coupled to the first pad, and a second input coupled to the second pad, the echo cancelation circuit configured to generate at the output a difference signal representing a voltage difference between the first pad and the second pad; first components between the communication channel and the first pad; and second components between the second pad and the termination.