DC wander effect of DC blocking capacitors on PCIe Gen3 signal integrity

This paper discusses the impact of DC wander also called baseline wander resulting from AC-coupling on signal integrity in receive waveforms in AC-coupled serial bus links with focus on PCIe Gen3 signaling. Receive signal behavior from charging and discharging activities of AC-coupling circuit is studied for fundamental understanding of baseline wander and its effect through simulations of short and long channels from various aspects of PCIe Gen3 signaling and high speed serial links in general.