Patent ID: 7042936
Filing Date: 2006-05-09
Classification: H03K,H04L

Abstract:
1. A system for equalizing amplitude tilt distortion in a signal, comprising: an amplitude tilt maker including a voltage controlled attenuator, wherein an input signal to said amplitude tilt maker passes through said voltage controlled attenuator and whereby said amplitude tilt maker varies an amplitude tilt of said input signal to form an output signal; an amplitude tilt sensor receiving a loop signal from said amplitude tilt maker, said amplitude tilt sensor processing said loop signal and controlling said voltage controlled attenuator to vary said amplitude tilt so as to compensate in said output signal for an amplitude tilt distortion in said input signal; a frequency diplexer; an amplitude detector, wherein said frequency diplexer provides a frequency sample of said loop signal to drive said amplitude detector; and a loop filter, wherein a voltage output of said amplitude detector is fed as an input to said loop filter; and said loop filter outputs a control voltage to said voltage controlled attenuator to control said voltage controlled attenuator.