The paper presents a review of the causes of phase shift formation in differential communication lines. A zigzag tracing method with an angle of 12° is proposed to compensate for the inhomogeneity of the glass fabric. A method for calculating the formation of skew in the length of conductors at turns with and without rounding is presented.

Keywords: differential pair, differential communication lines, signal phase shift, static skew, dynamic skew, delay, back drilling, non-uniformity effect, fiberglass weave, layout

The work includes an analysis of the mathematical apparatus determining the influence of parasitic parameters of the capacitor, the topology of the printed circuit board on the effective range of the decoupling capacitor. A mathematical apparatus is presented that determines the shift in the resonant frequency of the connected decoupling capacitor, taking into account the parasitic parameters of the topology.

Keywords: power distribution system, decoupling capacitor, self-resonance frequency, anti-resonance frequency, effective range, parasitic parameters, topology