Active resistive summer for a transformer hybrid

摘要

A transmit canceller comprises an amplifier having a first polarity input terminal, a second polarity input terminal, and an output terminal. A feedback element communicates with the second polarity input terminal and the output terminal. A first input resistor communicates with the second polarity input terminal and a composite signal that is based on a near end transmission signal and a received signal from a far end. A second input resistor communicates with the second polarity input terminal and a replica transmitter signal. A voltage source communicates with the first polarity input terminal. The received signal is output by the output terminal.