Patent ID: 8081932
Filing Date: 2011-12-20
Classification: H04B

Abstract:
1. In a transceiver front-end having a hybrid circuit, said hybrid circuit having a first port that is connectable to a transmission medium, a second port that is connectable to a transmit source, and a third port, a method comprising: (a) receiving a transmit signal from said transmit source on said second port; (b) receiving a received signal from said transmission medium on said first port; (c) routing said received signal through a series resistance connected between said first port to said third port to produce a second received signal, said series resistance being greater than a characteristic impedance of said transmission medium; (d) routing said transmit signal from said second port to said first port, a portion of said transmit signal being routed through said series resistance to said third port; and (e) cancelling said portion of said transmit signal at said third port to prevent said transmit signal from entering said third port.