Patent ID: 7221702
Filing Date: 2007-05-22
Classification: H04B

Abstract:
1. A transmitter/receiver for bidirectional communication with a transmission medium, comprising: a transmitter comprising an amplifier having an input terminal for signals to be transmitted, an output stage with output terminals coupled via resistors to the transmission medium, and a negative feedback circuit connected with its input terminals to the output terminals of the output stage and with its output terminal to the input terminal of the amplifier; a receiver connected with first input terminals to the output terminals of the output stage; and a current mirror having an input terminal connected to the amplifier output stage, and a plurality of output terminals coupled via resistors across a load and connected across second input terminals of the receiver, the receiver being adapted to extract signals received from the transmission medium by subtracting voltages between said second input terminals thereof from voltages between said first input terminals thereof.