Patent ID: 6744831
Filing Date: 2004-06-01
Classification: H04B,H04L

Abstract:
A bidirectional communication system, configured for full duplex communication, comprising:a communication channel; a main transmitter having an output for asserting a transmit signal; a transmit signal path electrically coupled between the communication channel and the output of the main transmitter; a receiver having an input for receiving a receive signal; a receive signal path electrically coupled between the communication channel and the input of the receiver, the receive signal path further coupled, in parallel fashion, to the transmit signal path; and a transmit signal cancellation circuit electrically coupled to the receive signal path, the transmit signal cancellation circuit developing a cancellation signal, representing a transmit signal, and asserting the cancellation signal on the receive signal path so as to prevent the transmit signal from being asserted to the input of the receiver.