White Paper
The Effect of Power Distribution Network Elements On Impedance
The examples in this paper shows how the addition of cavity elements, such as a voltage regulator module (VRM), decoupling capacitors, and stitching vias, influence the impedance of a cavity.
Ways to lower the impedance profile of the cavity at different frequency ranges
Addition of a VRM
Decoupling capacitors
Stitching vias
Learn more HyperLynx PDN Optimization Analysis