Experimental Analysis of Passive Crosstalk Between Power and Analog Signal Paths in Printed Circuit Boards

Crosstalk between high-frequency power lines and analog signal paths can introduce significant measurement errors in precision circuits. This work presents an experimental methodology to analyze passive crosstalk propagation on unpowered printed circuit boards (PCBs). By applying synthetic power switching signals and measuring their influence on op-amp input traces, this study explores layout-induced coupling mechanisms and compares results across different PCB routing strategies.