Transmit Noise and Impedance Change Mitigation in Wired Communication System

摘要

A method, system and circuit for providing for part or all of a transmitter, when it is in mute mode (not actively transmitting), to be turned off, removed, decoupled or modified in general in order to reduce the total noise submitted by the transmitter to the wired network into network controller. In parallel, an auxiliary circuit or impedance is added or coupled to the transmitter in order to mitigate the total return loss change of the transmitter. When in active transmitter mode, this auxiliary circuit or impedance will be removed or decoupled from the transmitter and transmitter will transmit in normal mode.

主权项

1. A method of mitigating transmit noise in a transmission system, comprising:
in an active mode:
coupling a first stage output to a second stage input; anddecoupling an auxiliary circuit from the second stage input to ground; and in a mute mode:decoupling an output of the first stage to the second stage input; andcoupling the auxiliary circuit from the second stage input to ground.