SIN(X)/X COMPENSATION CIRCUITRY.

摘要

Digital remodulation systems typically include digital to analog converters which have an inherent undesirable sin(x)/x frequency response. Digital remodulated signals are typically high frequency and thus not conducive to sin(x)/x pre-correction prior to digital to analog conversion. Described herein is apparatus (202) and a method for pre-correcting the sin(x)/x roll off of the digital to analog converter (104) in the digital signal path prior to the digital modulator (204) which precedes the digital to analog converter (104). This apparatus (202) corresponds to a cascading of spectrally symmetric and anti-symmetric transversal filters designed to compensate a relatively small portion of the frequency response of the resulting analog signal.