Analysis of Noise Coupling from Switching Voltage Regulator and Power Distribution Network to Differential Stripline Traces

Abstract

Differential stripline traces often need to be routed close to switching voltage regulators and their power delivery network for today's high-density designs. To study the risk of the noise coupling, this paper offers a comprehensive discussion on noise coupling mechanisms. It classifies noise sources, analyzes coupling mechanisms of each source and states possible impacts. The coupling mechanisms are explained and verified by simulation data, measurement results and a new proposed fitting model.