Patent ID: 6744316
Filing Date: 2004-06-01
Classification: H03F

Abstract:
In a feed forward amplifier that receives an input signal and amplifies the input signal to produce an amplified signal, wherein the feed forward amplifier determines an error signal based on the input signal and the amplified signal, wherein the feed forward amplifier amplifies the error signal to produce an amplified error signal, and wherein the amplified error signal comprises an error component and an error signal distortion component, an apparatus for correcting distortion in the amplified error signal comprising:a control circuit that receives a portion of the error signal, receives a portion of the amplified error signal, produces an error distortion signal based on the received portion of the error signal and the received portion of the amplified error signal, wherein the error distortion signal comprises a distortion component of the received portion of the amplified error signal, wherein the control circuit further quantifies the error distortion signal produces a control signal based on the quantified error distortion signal; and wherein the control signal is capable of controlling an adjustment of an amplitude of the input signal and a phase of the input signal, and wherein, by controlling an adjustment of the input signal, controlling the error signal distortion component.