Abstract
Phase delay exists in most filtering methods. The phase compensation method based on Taylor's formula requires differentiation of signals. Track Differentiators (TDs) have been widely used to extract differential signals in engineering, thus TD can be used to extract the differential signals used in phase compensation. There are two problems to compensate the phase delay based on Taylor's formula: (1) the phase compensation will amplify the noise in differential signal; (2) the phase compensation will make the signal gain change, which lead to poor filtering quality. Through theoretical derivation and numerical simulation verification, we find that after well-tuned parameters, the contradiction of phase compensation and filtering quality in TD can be resolved at acceptable level.
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