Logo on the left: Signal Integrity

The logo on the left is an illustration from my signal-integrity training classes.  The Excel surface plot shows the transfer function of a periodically loaded interconnect.  The vertical scale shows the transfer function in dB.  Frequency is plotted along  the left axis logarithmically; high frequencies are in the front, lower frequencies are towards the back.  The right axis shows the simulation nodes along the equidistantly spaced periodical loads; source node is in the upper right, far-end termination node is in the front center.  The interconnect segments in the Berkely SPICE simulations had 50-ohm characteristic impedance.  For sake of clarity, the periodical loads were modeled with lossless capacitive reactances.