System and method for stub tuning in an information handling system

A method, comprising:

• providing a signal path on a printed circuit board (PCB), wherein the signal path comprises:
• a first trace in a first conductive layer of the PCB, wherein the first trace is coupled to a signal source;
• a second trace in a second conductive layer of the PCB, wherein the second trace is coupled to a signal load;
• a tuned stub in a third conductive layer of the PCB;
• and
• a via through the first, second, and third conducting layers, and that connects the first trace to the second trace and to the tuned stub;
• driving a periodic signal on the signal path;
• and
• adjusting a length of the tuned stub such that a shape of the periodic signal is substantially unchanged between the signal source and the signal load.

A printed circuit board (PCB) comprising:

• a desired signal path between a signal source and a signal load and comprising:
• a first trace in a first conductive layer of the PCB;
• a second trace in a second conductive layer of the PCB;
• and
• a via interconnecting the first trace and the second trace;
• a tuned signal path between the signal source and the signal load and comprising;
• the first trace;
• the second trace;
• a third trace in a third conductive layer of the PCB;
• and
• the via, wherein the via also interconnects the third trace with the first trace and the second trace;
• and
• wherein:
• the length of the tuned signal path is chosen such that the tuned signal path comprises a half wavelength stub;
• and
• the via passes through the first, second, and third conducting layers.