Patent ID: 8254506
Filing Date: 2012-08-28
Classification: H04B,H04L

Abstract:
1. 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, wherein the cancellation signal comprises a first component and a second component, the first component representing a mirror image of the transmit signal and the second component representing a direct image of the transmit signal.