Patent ID: 6044117
Filing Date: 2000-03-28
Classification: H04L

Abstract:
A peak clipping circuit provided in a modulator of a signal transmitter, said peak clipping circuit limiting a level of an incoming in-phase signal and a level of an incoming quadrature signal, comprising:a clipping level generator for generating a clipping level;an inverter, coupled to receive said clipping level, for generating an inverted clipping level;a first comparator receiving said in-phase signal, said clipping level, and said inverted clipping level, said first comparator comparing a level of said in-phase signal with each of said clipping level and said inverted clipping level, and generating a first comparison result;a second comparator receiving said quadrature signal, said clipping level, and said inverted clipping level, said second comparator comparing a level of said quadrature signal with each of levels of said clipping level and said inverted clipping level, and generating a second comparison result; andsignal selecting means for responding to said first comparison result and selecting one of said in-phase signal, said clipping level, and said inverted clipping level and for responding to said second comparison result and selecting one of said quadrature signal, said clipping level, and said inverted clipping level.