I am using Decouple Wizard to plote a PDN lumped profile.
1. Loaded Board's HYP file in BoardSim
2. Lumped Analysis
Z profile is attached. It shows a capacitive Z profile at the low frequency band - below 100 kHz.This is confusing. In this range I would expect to see a somewhat flat prifile mostly corresponding to an internal VRM resistance. However, there is no VRM selection under Lumped Analysis.