An integrated digital pre-compensation framework for Hybrid-Filter-Bank DAC

Hybrid Filter Bank digital-to-analog converters suffer from the mismatch among channels. In this paper, a discrete-time behavioral model is derived to describe the effect of nonideality in Hybrid Filter Bank digital-to-analog converters (DAC). Mismatches including nonideal mixers and imperfect anti-aliasing are considered in this model. Based on this model, an integrated digital pre-compensation method is proposed to mitigate the performance degradation. Simulation results shows the validity of the compensation method.