Patent ID: 6925172

Claim:
A transceiver system for use in a telecommunication system, said transceiver system comprising: a transmission circuit including a transmitter input coupled to an input of a transmission amplifier; a receiver circuit including a receiver output coupled to an output of a receiver amplifier; a transmission line interface circuit coupled to an output of said transmission amplifier and to an input of said receiver amplifier, said transmission line interface circuit including a matching impedance and first and second primary transformer windings such that said matching impedance is coupled to a first output of said transmission amplifier via said first primary transformer winding at one end of said matching impedance and is coupled to a second output of said transmission amplifier via said second primary transformer winding at a second end of said matching impedance, and that terminates the transmission line of said transceiver system; a first pair of negative feedback paths to said transmission amplifier, one of said first negative feedback paths extending from a first side of said first primary transformer winding, and another of said first negative feedback paths extending from a first side of said second primary transformer winding; and a second pair of negative feedback paths to said transmission amplifier, one of said second negative feedback paths extending from a second side of said first primary transformer winding, and another of said second negative feedback paths extending from a second side of said second primary transformer winding.