Simulation Based Package Impedance Characterization of High Speed Differential Systems

The purpose of this paper is to present design oriented modeling, simulation, analysis of coupled differential signals with return path discontinuity in the packages. The variation of insertion loss, and return loss corresponding to differential mode and common mode operation are obtained considering different types of impedance parameters. The methodology and simulation results presented in the paper provide detailed understanding of impedance characterization useful for the design of differential signals routed through high speed packages.