A Distortionless Digital PWM Implementation by means of a Non-integer delay FIR filtering

소수형 디지털연산 알고리즘을 이용한 디지털 PWM의 고유한 비선형특성의 보상

A uniformly sampled digital pulse-width modulation adopting a pre-compensation filter scheme for applications in high-resolution digital-to-analog data conversion is described. It is shown that linearization of the intrinsic distortion resulting in uniformly sampled pulse-width modulation can be achieved by using a non-integer delay digital filter embedded within a noise shaping re-quantizer.