Adaptive, analog, continuous-time time-domain equalization for sampled channels in digital magnetic recording

A practical, low-cost, adaptive, analog, continuous time time-domain equalizer has been implemented in integrated sampled read/write channels. The equalizer is an IIR filter and is the generalization of a conventional analog transversal equalizer. Active frequency-domain filters are used as delay elements and filtration is completed before sampling. The equalizer has more degrees of freedom than DSP FIR filters and outperforms them. Theory of the generalized transversal equalization is presented.