Modified physical configuration to compensate parasitic effects in high speed systems

With systems operating at higher frequencies, parasitic effects are taking larger shares of the voltage and timing budget of a circuit. Also smaller devices have shrunken landscape for components, increasing coupling between critical physical features. These undesired loading on otherwise uniform transmission lines introduce impedance discontinuities which degrades signal quality and strains the performance metrics. This paper introduces a concept of compensating coupling effects by modifying transmission line physical characteristics. The modification in the line dimensions is calibrated to compensate the lumped equivalent of the coupling effect. High speed system spice simulation and S-parameter analysis has demonstrated the effectiveness of this methodology.