A linear group delay filter with tunable positive slope for analog signal processing

This article describes the design of a tunable positive slope linear group delay filter dedicated to analog signal processing applications. The designed is composed eight second-order all-pass cells which have been optimized obtain highly global characteristic over specified bandwidth for dispersion. Each these with Gm-C topology fit ideal high efficiency. Based on sensitivity analysis topology, possibility tuning highlighted. has achieved ST CMOS 55 nm technology and maximum 2.5 GHz, reachable 5.12 ns, variation ns. can be tuned in range from 1.48 ns/GHz up 2.03 ns/GHz. concept tunability validated through post-layout statistical analysis.