Patent ID: 9673959
Date: 2017-06-06
CPC Classifications: H04B,H04L,H04M

Claim:
1. A device for full duplex communication over a channel, the device comprising: a driver circuit and a replica driver circuit, an input of the driver circuit coupled to an input of the replica driver circuit and an output of the driver circuit coupled to an output of the replica driver circuit and further coupled to a channel, the driver circuit configured to produce an output data signal for transmission to the channel; an echo cancellation circuit coupled to the replica driver circuit and the channel, the echo cancellation circuit configured to receive an input data signal from the channel, an echo of the output data signal, and a signal generated by the source replica driver circuit configured to cancel the echo; and a calibration circuit coupled to receive an output of the echo cancellation circuit and to adjust the replica driver circuit; wherein during a calibration mode, the calibration module is configured to: