Automated Crosstalk Scan, Impedance Scan and DRC+ for Signal Integrity Signoff

Crosstalk analysis for high speed PCB design becomes more and more important due to the high data rate and tightly coupled routing. Traditional circuit-based analysis can not meet the accuracy demand. Three-dimensional (3D) full-wave electromagnetic solver is required to capture the complex 3D PCB environment and the frequency-dependent phenomena. This paper introduces a novel hybrid solver technology with both speed and accuracy. Crosstalk metrics to quantify the crosstalk level are also developed by post-processing S-parameter. Combining these two techniques allows designer to achieve full board crosstalk in a few hours as planned, which significantly reduces the post-layout check time and ensure timely sign-off.

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