Microstrip Differential Pair Full Wave Electromagnetic Analysis

Abstract

The paper analyzes the parameters of a microstrip differential pair using full wave electromagnetic method. The analysis is made in the frequency domain and covers the frequency span from 0.5 GHz to 50 GHz. The substrate employed is Rogers 4003 C. The results are intended to be used in electromagnetic compatibility of high speed PCBs. The dependencies of the reflection and transmission parameters on the separation between the two lines as well as the variations of the differential and common characteristic impedances are analyzed.