Non-integral delay circuit

摘要

A time-discrete signal is delayed by a selectable fraction ( delta ) of a sampling period of the time-discrete signal. First (F1) and second (F2) differential signals having mutually different phase characteristics are derived from the time-discrete signal and are subsequently combined (MIX) dependent upon the selectable fraction ( delta ) to obtain a phase-adjusted correction signal. The product of the selectable fraction ( delta ) and the correction signal is added to the time-discrete signal to obtain a time-discrete signal which has been delayed by the selectable fraction ( delta ). The second differential signal is obtained by means of a differentiator with asymmetric coefficients in order to optimise the transfer characteristic for delta =0.5.