Analysis and Design of Singly Terminated Transmission-Line FIR Adaptive Equalizers

We present transmission-line-based finite-impulse response (FIR) filters built using singly terminated delay lines and compare their performance with respect to circuit nonidealities. New topologies for FIR filters called bi-transversal structures, which are electrically equivalent to transversal equalizers, are introduced. We show that resistive shunt compensation of transmission lines is a useful technique that results in dramatic improvements in the performance of singly terminated transversal filters, making them excellent candidates for LMS algorithm based adaptive equalization at gigabit speeds