Abstract
Many capacitors are used to the PDN. The conventional measurement method to get the terminal impedance of the capacitor has the problem from the point of view of the electromagnetism.
Keywords: Decoupling capacitor, PDN, parallel connected capacitors, ground plane, chip tantalum capacitor, short-circuit board, transmission coefficient, characteristic impedance, low-pass filter, voltage droop, power supply noise, network analyzer, scattering matrix, 4-terminal circuit, distributed element model, lumped element model, 2-terminal component, propagation constant, reflection loss, PDN.