SpecctraQuest Simulation Winter 2003/4 Final Presentation Date : Student : Kobi Ochayon Supervisor : Boaz Mizrachi
Project Goal Simulate lab ’ s experiment board lines with HSDS phenomena on SpecctraQuest
Project steps A. Learning B. Simulating C. Comparing
Step A - Learning Learning and understanding how the simulator works and its abilities. Performing the current HS experiment. Participate in HSDS course and learn the high speed phenomena in digital systems
Step B - Simulating Effects of trace lengths. Effects of via. Effect of high cross-talk Effects of differential trace mis-matches Effects of stubs and SMA connectors on signal integrity.
Effects of trace lengths ShortMediumLongVery long 1’’10’’40’’60’’ Simulation modelcomparediff
Multi-via trace Reflections Equivalent inductance and capacitance model Simulation results
Crosstalk simulation 10 ’’ long trace (4 mil spacing) oscillator driven trace – 125MHz modelSimulation results
Mismatch simulation 10 ’’ long trace 1 ’’ skew between the differential pair model results
Connector simulation SMA connectors 30 ’’ coax cable 2 ’’ trace to SMA model results
Step C – Comparing with Hyperlynx results Trace length Trace length (short,medium,long,very-long)shortmediumlongvery-long Multi-via trace (missing) Xtalk Mismatch
Comparison summery SpecctraQuestHyperlynx Long tracesNo signal fadingSignal fading XtalkMinor diff between close and far victims Remarkable diff Multi viaComplicated 2 build- mismatchConvincing results convincing results
END
Beckup Slides
Simulation model – effects of trace length back
Effects of trace lengths short trace back
Effects of trace lengths - medium trace back
Effects of trace lengths - medium trace back
Effects of trace lengths – long trace back
Effects of trace lengths – very long trace back
Traces comparison-input back
Traces - diff back
Multi Via Trace – model back
Multi Via - Results back
Crosstalk trace- Simulation model back
Crosstalk trace – Sim Results back
Mismatch model back
Mismatch Results input common back
Connectors simulation back
Connector-results back
Hyperlynx-Simulation Model back
Hyperlynx-Short trace back
Hyperlynx -Medium Trace back
Hyperlynx-Long trace back
Hyperlynx- Verylong trace back
Hyperlynx – Multi via back
HyperLynx- Xtalk back Field solver
Hyperlynx – Connectors back
HyperLynx- Mismatch output input back
Xtalk – field solver back