Long Range Connector Via Coupling Effects for High Speed Signals

Abstract

Long range via coupling effects are analysed for connectors with a huge signal count and high speed signals using 3D field calculations. The effect was also verified with time domain measurements. The results are discussed with respect to the impact of long range coupling on signal integrity. IntroductionFor systems with a huge number of signals and tight wiring constraints signal to signal coupling is one of the limiting factors for the system performance. A lot of effort needs to be spent in order to correlate critical bus performance with signal simulations. Especially for large bus systems also parasitic coupling effects need to be taken into account.